CA2864328A1 - Inmate management and call processing systems and methods - Google Patents

Inmate management and call processing systems and methods Download PDF

Info

Publication number
CA2864328A1
CA2864328A1 CA2864328A CA2864328A CA2864328A1 CA 2864328 A1 CA2864328 A1 CA 2864328A1 CA 2864328 A CA2864328 A CA 2864328A CA 2864328 A CA2864328 A CA 2864328A CA 2864328 A1 CA2864328 A1 CA 2864328A1
Authority
CA
Canada
Prior art keywords
inmate
call
facilities
facility
computer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2864328A
Other languages
French (fr)
Other versions
CA2864328C (en
Inventor
Robert L. Rae
Michelle L. Polozola
John S. Hogg, Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Securus Technologies LLC
Original Assignee
Securus Technologies LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=38283260&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2864328(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Securus Technologies LLC filed Critical Securus Technologies LLC
Publication of CA2864328A1 publication Critical patent/CA2864328A1/en
Application granted granted Critical
Publication of CA2864328C publication Critical patent/CA2864328C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/22Arrangements for supervision, monitoring or testing
    • H04M3/2281Call monitoring, e.g. for law enforcement purposes; Call tracing; Detection or prevention of malicious calls
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Arrangements for interconnection between switching centres
    • H04M7/006Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/16Automatic or semi-automatic exchanges with lock-out or secrecy provision in party-line systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/56Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities

Abstract

Disclosed are systems and methods that provide centralized or nodal inmate management and telephone call processing capabilities to controlled environment facilities.
An inmate management and call processing system serves a plurality of facilities and includes an inmate information database. The database is shared across the facilities and contains inmate records that may be accessed and modified by each facility as the inmate is transferred among those facilities. Each inmate record may include, among other information, contact information of third parties whom may be notified of the inmate's arrest and/or subsequent transfers of the inmate to different facilities. The inmate management and telephone call processing system may use third party contact information to establish accounts used to charge calls or transactions made by an inmate while residing at the facility.
Some systems may also provide call processing, video conferencing, e-mail, voicemail, and/or videomail applications, and the like to the facilities.

Description

INMATE MANAGEMENT AND CALL PROCESSING
SYSTEMS AND METHODS
[0001] This is a division of Canadian Patent Application No. 2,584,302, filed April 10, 2007.
TECHNICAL FIELD
[0002] The present invention relates to the field of telecommunications and in particular to systems and methods for detecting and/or preventing the unauthorized use of call features in a Voice over Internet Protocol (VoIP) environment.
BACKGROUND OF THE INVENTION
[0003] Private premise-based telephone systems, such as those installed at correctional facilities or other controlled-environment facilities, have created a need to monitor various events occurring on the telephone lines of the system.
Telephone systems at correctional facilities or other controlled-environment facilities may comprise a microprocessor-based call processing system having operational software that is capable of allowing control over telephones connected to the system. For example, the system may be programmed to prevent inmates or residents from contacting unauthorized parties or using the telephone system for fraudulent purposes. An authorization mechanism may be utilized to prevent residents from dialing unauthorized numbers directly.
[0004] Additionally, a call processing system my prevent a resident from initiating a three-way call, taking part in a conference call, or the like. However, a particular problem that is encountered in these systems is the placement of a three-way call, or the like, by a party that is authorized to be called by the resident. Once the resident is connected to an authorized number, the resident may be connected to a third party at an unauthorized number via tlae three-vv-ay call feature by a party at the authorized number. C,are rnay loe taken to insure that a resident does not call an unauthorized party. However, once a call is connected through the Public Switched Telephone Network (PSTN) it becomes very difficult to control the actions of the called party. Therefore, to preserve this screening activity, it is desirable to insure that the called party is in fact the person to whom the call is terminating. Therefore, it is desirable to have control of the call with respect to all the parties who are on the phone call.
In short, it is desirable to prevent addition of an unknown third party to a resident call in order to preserve the integrity of the initial call screening.
[0005] A three-way call may be initiated when the originally called party (e.g. an authorized party outside the private telephone system) depresses the hook switch on the telephone, generating a hook flash signal. This signals the telephone central office to put the resident on hold and provide a dial tone to the originally called party. On receipt of the dial tone, the originally-called party dials the number of an unauthorized third party, and when the connection is completed, the resident and the unauthorized third party can communicate through the connection established outside the private system.
[0006] Three-way call monitoring systems which have been developed to prevent unauthorized calls according to the foregoing scenario rely on the detection of telephone signals. They typically monitor the local telephone connection for the hook flash "click"
signal or associated central office signals that fall in a frequency band outside the range of frequencies produced by the human voice. These systems typically monitor signals on the local telephone line through a frequency filter designed to pass audio signals in this frequency band. A three-way call attempt may be indicated whenever signals in the frequency band have energies above a selected threshold. Some systems compare the signals with a hook flash reference signal utilizing sampling techniques implemented with a digital signal processor (DSP).
[0007] Even in a more or less conventional telephone environment these systems may not be very accurate for a number of reasons. The underlying assumptions about the frequency profile of three-way call events, i.e. the hook flash and signals generated by activating central office switches, are often wrong. For example, the hook flash signals are often modified by transmission through switches and along loaded lines, and even if assumptions about the frequency characteristics of the initial signal are accurate, these , characteristics may be substantially distorted by the time the "hook flash"
signal reaches a call processing system implementing three-way call detection, or the like.
[0008] Other systems and methods for detecting undesired call activity are disclosed in U.S. Pat. No. 5,768,355 and U.S. Pat. No. 7,079,636, entitled THREE-WAY
TELEPHONE
CALL PREVENTION SYSTEM AND METHOD. U.S. Pat. '355 teaches using digital signal processing to identify a third-party connection. U.S. Pat. '355 operates by establishing a baseline ambient, or background, noise level, and detecting when the signal noise level drops below the ambient noise level. When the current signal noise level drops below the ambient noise level, the system assumes that a three-way conference call has been attempted by the called party. U.S. Pat. '636 discloses an exemplary technique for detecting three-way calls, which in general includes detecting a call signal level, determining if the call signal level is below a predetermined silence level threshold, and measuring a duration the call signal level remains below the predetermined silence level threshold.
[0009] Internet protocol ("IP") is a routing protocol designed to route traffic within a network or between networks. VoIP is a method for providing voice capabilities over an IP
network, such as the Internet or an intranet. In such networks data packets are sent to and from communication sites to facilitate communication. In communication systems utilizing a VoIP protocol, the packets are commonly referred to as datagrams. In typical VoIP networks, each communication site sends datagrams to other communication sites with which they are in communication. There are different approaches to sending datagrams. Control signals per ITU recommendation H.323, and audio-based media streams using Real-Time Transport Protocol (RTP) per Internet RFC 1889, may be applied. Alternatively, control signals could be applied using other protocols such as Session Initiation Protocol (SIP) per Internet RFC
2543.
SUMMARY
[0009a] Certain exemplary embodiments can provide a computer-based system, at a plurality of facilities, for managing inmate information, each of the facilities having one or more telephone terminals and computer terminals, the computer-based system located remotely from at least one of the plurality of facilities, the system comprising: a networking device exchanging Voice over Internet Protocol (VoIP) data packets with call processing gateways at the plurality of facilities over digital data links, the call processing gateways processing the VoIP data packets to or from the telephone terminals for transmission over the digital data links; an inmate management-system coupled to the networking device for providing shared data access of inmate records to computer terminals at said plurality of facilities, said inmate records created with first inmate information collected from a first computer terminal at a first facility of the plurality of facilities and modified responsive to collecting second inmate information from a second computer terminal at a second facility of the plurality of facilities; and a call application management system connecting a call to or from the telephone terminals over a telephone carrier network responsive to receiving a request for connecting the call and the call being authorized based on the inmate records provided by the inmate management system.
[0009b] Certain exemplary embodiments can provide a method for managing inmate information at multiple facilities including a first facility and a second facility, each facility comprising multiple telephone terminals and computer terminals, the method carried out in a computer-based system located remotely from at least one of the multiple facilities, the method comprising: receiving, from a first computer terminal at the first facility, first inmate information associated with an inmate for creating an inmate record;
receiving, from a second computer terminal at the second facility, second inmate information associated with the inmate for modifying the inmate record; storing the inmate record in the computer-based system for shared access across to the inmate record computer terminals in the multiple facilities; receiving a request from one of the multiple telephone terminals for connection of a call over a telephone carrier network; and connecting the call from one of the telephone terminals over a telephone carrier network and a digital data link responsive to authorizing the call based on the inmate records stored in the computer-based system.
100101 Embodiments of the present invention are directed generally to systems and methods for detecting and/or preventing unauthorized call activity in a VoIP
environment.
According to certain embodiments, a call is connected in which at least one party is a VoIP

call party, and resulting VoIP signals for the call are monitored for detecting unauthorized call activity. In a first situation wherein a call is an interconnection between a PSTN-based call and a VoIP call, such as a SIP-based or RTP-based call, different methods for detection of VoIP signals that indicate or include suspend and resume events may be used to detect unauthorized call activity, such as initiation of a three-way call. For example, when the user on a PSTN line attempts to activate a traditional form of three-way calling, or undertakes similar unauthorized call activity, embodiments of the present invention detect various VoIP
signals from which the three-way call attempt may be determined. As used herein, the phrase "VoIP signals" may refer to various out-of-band and/or in-band signaling, either of which may be a part of VoIP data packets or may be separate VoIP-related instructions. Appropriate action may then be taken by calling systems employing an embodiment of the present invention upon detection of unauthorized call activity, such as intervening in the call to warn the parties to not participate in a three-way call (e.g., via an interactive voice response unit or the like), disconnecting the call, monitoring the call for investigative purposes, and/or the like.
As an example of use of in-band signals for three-way call detection, the return of Voice Activation Detection (VAD) idle noise is used by an embodiment of the present invention, where VAD idle noise being received may be treated as a silence period and used as an indicator of initiation of a three-way call. Examples of out-of-band signaling that might be used to detect unauthorized call activity might include Signaling System 7 (SS7) signaling, or the like.
[0011] In situations wherein both parties to a call are employing VoIP, signaling that occurs between traditional VoIP devices may be monitored to determine when one VoIP
device invites another party or another gateway to join into the existing VoIP
call. Again, a call processing system employing an embodiment of the present invention may take appropriate action in response to detection of an attempt to initiate a three-way call.
Alternatively, in a VoIP-only environment, the addition of third parties to a call may be disallowed at the time the call is established to avoid the need to later detect attempts to initiate three-way calling.

[0012] Certain embodiments may also employ an ability to monitor a call for cadence, frequency, amplitude, phonetics, tonal combinations, and/or other attributes that occur in speech, and to use such information to determine the number of voices taking part in a call. Thus, in accordance with an embodiment of the present invention, the addition of a unique set of voice variables may show that a third party has joined a call.
Again, a system employing an embodiment of the present invention may take appropriate action such as intervening to warn the parties to not participate in a three-way call, disconnecting the call, monitoring the call for investigative purposes or the like. An ability to monitor a call may be used to monitor for and identify other sounds of interest (e.g., from background sounds of one or more parties on the call), such as that of a gunshot, a scream, outdoor sounds (birds, wind noise, etc.), DTMF, recording tones, alarms, sirens, etcetera. An investigator may be alerted as a result of the detection of the sound of the call flagged for investigation.
100131 Embodiments of the present invention have particularly advantageous applicability within controlled-environment facilities. Examples of controlled-environment facilities include correctional facilities (e.g., municipal jails, county jails, state prisons, federal prisons, military stockades, juvenile facilities, and detention camps), healthcare facilities (e.g., hospitals, nursing homes, mental health facilities, and rehabilitation facilities, such as drug and alcohol rehabilitation facilities), restricted living quarters (e.g., hotels, resorts, camps, dormitories, and barracks), and the like. Certain controlled-environment facilities may be thought of as a small community or city, perhaps walled or otherwise access restricted, wherein various activities occur within the community and between the community and those outside the community in the daily operation thereof. Such a community includes a number of individuals and enterprises directly associated therewith, including management, staff, and inmates, residents, patients, or guests (herein referred to as "residents"), and a number of individuals and enterprises indirectly associated therewith, including friends and family of residents, vendors, government agencies, providers of services to residents, and individuals with a connection to the facility or its residents. As described further herein, embodiments of the present invention have particular applicability within correctional facilities, but the concepts described herein may likewise be employed in other controlled-environment facilities.

[0014] Certain embodiments make use of data concerning a resident of a controlled-environment facility that is placing a call, and/or data related to a called party or number, to determine if there is a propensity for a three-way call situation to arise in a call placed by the resident of the facility. This information may be provided by a controlled-environment facility's call management system, a controlled-environment facility's information management system, or the like associated with a controlled-environment facility in which the resident resides.
[0015] As a result of a determination that an elevated propensity for a three-way calling situation exists, sensitivity of three-way call detection methods and/or systems, such as discussed above and/or disclosed in the incorporated references, may be elevated for a call placed by that resident and/or a call placed to a party or number.
Alternatively or additionally, if a call has a heightened propensity for a three-way call situation to arise, the response applied by a system employing an embodiment of the present invention may be elevated. For example, if a three-way call attempt would normally only be logged or otherwise noted for possible further investigation, the parties to the call may be warned, and in a situation where the call's parties might normally only be warned, a call may be disconnected when an attempt to initiate a three-way call is detected.
= [0016] The foregoing has outlined rather broadly the features and technical advantages of the present invention in order that the detailed description of the invention that follows may be better understood. Additional features and advantages of the invention will be described hereinafter which form the subject of the claims of the invention.
It should be appreciated by those skilled in the art that the conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present invention. It should also be realized by those skilled in the art that such equivalent constructions do not depart from the spirit and scope of the invention as set forth in the appended claims. The novel features which are believed to be characteristic of the invention, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures. It is to be expressly understood, however, that each of the figures is provided for the purpose of illustration and description only and is not intended as a definition of the limits of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] For a more complete understanding of the present invention, reference is now made to the following descriptions taken in conjunction with the accompanying drawing, in which:
[0018] FIGURE 1 is a block diagram of a telephone system adapted in accordance with an exemplary embodiment of the present invention;
[0019] FIGURE 2 is a flowchart of unauthorized call activity detection according to an embodiment of the present invention; and [0020] FIGURE 3 is a flowchart of unauthorized call activity detection according to another embodiment of the present invention.
DETAILED DESCRIPTION
[0021] In a VoIP environment, particular problems arise for detecting thee-way calls. Triggers that might normally be used to detect initiation of a three-way call in a conventional PSTN environment, or the like, may not be passed in a VoIP-based call. For example, in a packetized VoIP environment it is very difficult to detect a hook flash or silence. Packets oftentimes will not pass a hook flash, or similar sound, or pass silence.
Similarly, lower so-called "levels of silence" are typically screened out of packets during the creation of the packets.
[0022] As for "level of silence" or similar triggers that may be used in three-way call detection within a VoIP environment, typically when sound drops below some threshold level it is deemed to be silence and not transmitted. VoIP data transmission bandwidth usage may be minimized through the use of Voice Activation Detection (VAD), or other methods. VAD
allows a data network carrying voice traffic over the Internet to detect the absence of audio and conserve bandwidth by preventing the transmission of "silent packets" over the network.
Most conversations include about 50% silence. VAD (also called "silence suppression") can be enabled to monitor signals for voice activity so that when silence is detected for a specified amount of time, the application informs the Packet Voice Protocol and prevents the encoder output from being transported across the network. VAD may also be used to forward idle noise characteristics (sometimes called ambient or comfort noise) to a remote IP telephone or gateway. A standard for digitized voice, 64 Kbps, is a constant bit rate whether the speaker is actively speaking, is pausing between thoughts, or is totally silent. Without idle noise giving the illusion of a constant transmission stream during silence suppression, the listener would be likely to think the line had gone dead. As a result, sounds at different levels of silence are not passed in a VoIP call. Therefore, since conventional three-way call detection may analyze different "thresholds of silence" to determine whether or not a caller is "away" setting up a three-way call, conventional three-way call detection in VoIP calls is problematic.
[0023] As for a hook flash or similar triggers, a sharp click occurs when a switch hook is depressed. This click is usually proceeded by a period of silence, and since a VoIP
system would not necessarily be transmitting encoded sound packets during the silence period, the sharp click is typically the first sound that starts the VoIP
system transmitting encoded sound packets again. However, a VoIP system will not typically react fast enough to catch the click, and therefore the VoIP system may not transmit the click at all or truncate the click rendering it unrecognizable by a conventional three-way call detection system. For example, a rising edge of the click may trigger a VoIP filter to start passing packets again, yet not transmit the click itself. More specifically, VoIP systems may have jittering timing and as a result a hook flash click may be completely screened out in the VoIP
transmission, similar to the "levels of silence" discussed above, together making both silence detection and/or click detection problematic for use in three-way call detection in a VoIP
environment. Therefore, use of VoIP creates new issues in regards to detecting and/or preventing three-way call activity.
[0024] FIGURE 1 shows telephone communication system 100, adapted in accordance with an exemplary embodiment of the present invention. Telephone communication system 1 00 of the embodiment illustrated in FIGURE 1 includes n plurality of telephone terminals 1 10-1 13 disposed at a location for which calling services are to be provided. The location may, for example, comprise a prison or other controlled-environment facility in which the use of telephones 110-113 is monitored and controlled.
100251 In order to better aid the reader in understanding the concepts of the present invention, telephone communications systems and methods of the present invention are described herein with reference to configuration and use in providing calling services to a correctional facility, such as a jail, a prison or a similar controlled-environment facility.
However, it should be appreciated that call processing systems and methods of the present invention are not necessarily limited to use with respect to such correctional facilities. For example, embodiments of the present invention may likewise be utilized with respect to any number of other environments, such as hospitals, nursing homes, camps, dormitories, businesses, residences, kiosks, etcetera.
[0026] Telephone terminals 110-113 may not only comprise telephone handsets but may also include general-purpose processor-based devices such as personal computers (PCs), personal digital assistants (PDAs), kiosks, or the like. Terminals 110-113 are preferably connected to processor-based call processing system 120 by wire lines or wireless links, broadly designated 140. Processor-based call processing system 120 may comprise a programmable computer having a central processing unit (whether general purpose or application specific), memory, and appropriate input/output interfaces, which are operable under an instruction set defining operation as described herein. All or any portion of call processing system 120 may be disposed within a facility it serves, in an outside central location, or the processes shown provided by processor-based call processing system 120 may be provided in a decentralized manner by distributed processing outside and/or inside the facility. Communications links 140 may comprise analog voice lines, such as those associated with plain old telephone service (POTS), digital communication links such as those used between a digital private branch exchange (PBX) and its associated user stations, and/or Ethernet or wireless communications links (e.g. for VoIP communication where terminals 110-113 are multimedia terminals, VoIP phones, or the like), as examples. Line interface 123 provides interfacing between the signals native to terminals 110-111 and a processor or processors of call processing system 120.

[0027] VoIP gateway 126 may provide voice connectivity via WAN 180.
WAN 180 may comprise any data network, such as an intranet, an extranet, the Internet, a public network, a private network, and/or the like. Although illustrated as a WAN, it should be appreciated that embodiments of the present invention may utilize data networks such as a local area network (LAN), a metropolitan area network (MAN), an intranet, an extra net, the Internet, and/or the like, in combination with, or in the alternative to, a WAN.
[0028] Terminals 110-113 may be placed in voice communication with any of a number of user terminals via VoIP gateway 126 and WAN 180. For example, telephone terminal 155 connected to PSTN 160 may be placed in communication with telephone terminal 110, via VoIP gateway 126 and WAN 180, perhaps using a corresponding VoIP
gateway, such as may be disposed at an edge of WAN 180 and coupled to PSTN
160, or otherwise associated with WAN 180 and/or PSTN 160. Additionally or alternatively, terminals 110-113 may be placed in communication with devices such as video phones, multi-media computers, cellular phones, personal digital assistants (PDAs), and/or the like via VoIP
gateway 126 and WAN 180, whether such devices are coupled to WAN 180 or PSTN
160.
[0029] VoIP gateway 126 includes compressor and packetizer 125 and network interface 127. Compressor and packetizer 125 produces compressed data packets from the telephony signals. These packets are processed in network interface 127 so that they can be applied through WAN 180 to corresponding VoIP gateway. The telephone signals may be decompressed and depacketized by VoIP gateway and distributed to a public switch of PSTN
160. VoIP gateway 126 may also decompress and depacketize incoming VoIP data packets to provide telephony signals to terminals 110-113, particularly where terminals 110-113 are not capable of decompression and depacketization.
[0030] In operation according to embodiments of the present invention, terminals 1 10-1 13 are selectively connected to offsite PSTN 160 via WAN 180 and VoIP
gateway 126. Processor-based system 120 preferably selectively connects appropriate ones of terminals 110-113 with the VoIP gateway 126 for completion of desired canc.
VoIP gateway 126 utilizes internet protocols to establish a packet-switched network connection (in contrast to a circuit-switched network connection of the PSTN) between a calling and called party to thereby connect a desired call.
[0031] VoIP gateway 126 of a preferred embodiment is provided to service and control VoIP communications. Various types of VoIP communications may be effectively managed and controlled in accordance with embodiments of the present invention by VoIP
gateway 126. Voice data may be processed by means of a vocoder (Voice Coder/Decoder), as may be provided in VoIP gateway 126. Voice coding and decoding as utilized according to embodiments of the invention may implement one or more of several standard schemes, such as ITU recommendation G.723.1, G.729, or G.711 among others.
[0032] The illustrated embodiment of FIGURE 1 includes functionality of a call processing platform integrated with that of a call processing gateway. Of course, in other embodiments, such functionality may be separated. In the exemplary embodiment of FIGURE 1, call processing system 120 is shown including switching control block 121, routing control block 122, billing control block 124, validation control block 128, and unauthorized call activity detection control block 129 in addition to line interface 123 and VoIP gateway 126. Typically, controlled-environment facilities, such as is described in the present example, have rules and regulations regarding telephone usage by residents.
Accordingly, switching control block 121, routing control block 122, billing control block 124, validation control block 128, and unauthorized call activity detection control block 129 may be utilized to cooperatively control, route, connect, disconnect, and account for calls.
Unauthorized call activity detection control block 129 may take the form of an agent program or the like. The functions represented by each of switching control block 121, routing control block 122, billing control block 124, validation control block 128, and unauthorized call activity detection control block 129 may be implemented by equipment disposed within a facility served, in an outside central location, or the processes may be provided in a decentralized manner by distributed processing outside and/or inside the facility.
[0033] A user of one of telephones 110-113 may place the telephone in an off-hook condition and dial or otherwise provide user and/or account identification information, in addition to providing a destination number or other information with respect to a desired call to be placed. Validation control block 128, perhaps in cooperation with a call application management system and/or a call treatment system, may operate to verify a) the identity of the calling party, b) that the calling party is authorized to place a call, and c) that the called party will receive calls or is authorized to receive calls from the calling party.
[0034] Unauthorized call activity detection control block 129 is preferably operable to monitor a connected call to provide call intelligence for use in determinations with respect to allowing a particular call to be continued and/or other call control features to be invoked.
According to embodiments of the present invention, unauthorized call activity detection control block 129, such as the aforementioned agent, provides real-time intelligence with respect to fraudulent or otherwise unauthorized activity being attempted during a call, such as unauthorized three-way call detection, as discussed in greater detail below.
[0035] It should be appreciated that call processing functionality may be provided in a call flow at one or more points based upon various considerations. For example, VoIP
gateway 126 and/or unauthorized call detection functionality 129 may be disposed in a number of configurations and/or locations, such as disclosed in above incorporated U.S.
Patent Application No. 10/800,473, entitled "CALL PROCESSING WITH VOICE OVER
INTERNET PROTOCOL TRANSMISSION." The illustrated embodiment shows unauthorized call activity detection control block 129 coupled to line interface 123, disposed in the call flow external to the VoIP data stream, to operate with respect to telephony signals which have been decompressed and depacketized by VoIP gateway 126. However, as discussed in greater detail below, embodiments of the present invention may gather information from the VoIP data stream to provide at least one aspect of three-way call detection. Thus, embodiments of the present invention may dispose various aspects of call processing functionality, particularly unauthorized call activity detection control block 129, in a call flow differently, whether inside or outside of the VoIP data stream, than as shown in FIGURE 1.
[0036] FIGURES 2 and 3 are flowcharts of embodiments of methods employed in accordance with the present invention for unauthorized call activity detection, such as three-way call detection and/or prevention, in a VoIP environment. A first exemplary operational flow 200 according to one embodiment is illustrated in FIGURE 2, which may be used for three-way call detection and/or prevention for a call between a conventional PSTN connected caller, such as a PSTN-based connection provided to a person outside of a controlled-environment facility, and a VoIP caller, such as a SIP-based connection provided to a user of phone 110 of call system 100 of FIGURE 1. The PSTN-based call is joining a VoIP-based call at a gateway, such as gateway 126 of FIGURE 1.
[0037] At 201 a resident of a controlled-environment facility picks up a phone, such as one of phones 110-113 of controlled phone system 100 illustrated in FIGURE
1, to place a call. The resident then typically enters a personal identification number or the like at 202. At 203 the resident then enters a number outside the facility that he or she wishes to call. At 204 call processing and/or facility management functionality, such as described above, determines if the resident is allowed to make calls and/or call the entered outside telephone number and connects the call, if allowed. In this example, a VoIP call may be established for the resident using SIP and interconnected via a PSTN to the outside number using conventional PSTN
switching equipment, such as a terminating switch, typically employing out-of-band SS7 or PRI digital signaling. Then the call is connected to the called party off the terminating switch.
[0038] Data concerning the resident, such as may be maintained by a controlled-environment facility call management system, a controlled-environment facility information management system, or the like, and /or data related to a called party or number may be used at 204, to determine if there is a propensity for a three-way call situation to arise in a particular call Some of the variables that could be considered at 204 might include past attempts to initiate a three-way call or other unauthorized call activity;
past attempts at other types of fraud; the resident's payment status, billing activity, payment history, calling activity, calling history; the nature of the facility the resident is calling from (e.g.
the average length of stay in the facility); and/or the like. As a result of a determination at 204 that an elevated propensity for a three-way calling situation exists for a particular call, various steps may be taken. For example, if it is determined at 204 that the resident or called party has participated in calls in the past in which an attempt to invoke a three-way call was detected, a sensitivity of three-way call detection may be elevated at 204.

[0039] At 204 a determination may also be made that a three-way call or other call features are allowed for a particular call. For example, if the called party is an attorney or bail bondsman, three-way calling may be allowed in order for the called attorney or bail bondsman to "conference-in" needed parties (e.g. a witness, surety, etc.) [0040] Otherwise, when the PSTN call goes off hook to initiate a three-way call or the like, there are different types of out-of-band signaling coming from an SS7 environment of the PSTN-based call indicating a suspend event reaches the gateway and then is translated to out-of-band signaling in a SIP environment. In the example of FIGURE 2 the outside party on a PSTN line attempts to undertake unauthorized call activity, such as activate a traditional form of three-way calling at 205. At 206, various out-of-band and/or in-band signaling are detected that may indicate a suspend event and/or a resume event indicating that a party has returned to the call.
[0041] By way or example, use of in-band signals for three-way call detection might include monitoring return of VAD idle noise at 207 as the equivalent of silence. For example, at 207 one embodiment of the present invention may treat the period where VAD
idle noise being received as a time frame of silence period for detection of an attempt to initiate a three-way call. VAD typically will cut a call in and out rather quickly to conserve bandwidth.
Thus, the present systems and methods for unauthorized call activity detection may look for longer periods of VAD activity, such as would be generated by a VoIP gateway as a result of a party hook flashing off of a call, which would result in the VoIP gateway only receiving silence from the PSTN connected caller. Embodiments of the present invention may, as mentioned, treat the VAD as silence for purposes of unauthorized call activity detection, which might also look for timing windows of such silence periods indicative of establishing a three-way call. In certain embodiments, such in-band VAD detection of idle noise may be compared against a simulated model of an approximate description of the interaction between sources and the underlying network. The interaction of a source with the rest of the system may be derived through an iterative procedure that evaluates feedback that a source receives from the network, for example.

[0042] An example of out-of-band signaling that may be used to detect three-way calling activity may include monitoring of SS7 PSTN signaling that indicates the outside party has done something, such as a flashhook (208), to initiate a three-way call. Within the PSTN environment, initiating a three-way or answering a call waiting call, such as by use of a flash hook, may generate an SS7 suspend event within the network. The generated SS7 suspend message is an indication to the opposite end of the call, in this case the calling system associated with the resident of the controlled-environment facility that the other end point in the call, the outside party, is going to stop sending information. At a later point in time when the hook flash happens a second time to either come back on the call with another party or to resume this call from a call waiting event, there will be a resume event that is sent. When the VoIP gateway receives these events, it will transfer those events into the SIP
network.
[0043] As another example, in certain embodiments a three-way call attempt may be deduced from a model of unacceptable packet loss which persists from a predetermined time period. For example, the packet loss for a monitored call may be compared against a simulated model of an approximate description of the interaction between sources and the underlying network. The interaction of a source with the rest of the system may be derived through an iterative procedure that evaluates feedback that a source receives from the network.
[0044] The method of transfer into the SIP network varies depending on the gateway. For example, a Generic Description Table (GDT) might be used to translate the SS7 signaling into a SIP message, which may take the form of ASCII text. Another method of transfer of the suspend and resume event into the SIP network might employ a variation on the SIP protocol known as SIP Trunking (SIP-T), which is adapted to carry SS7 network information over the SIP network such that the information may be converted back into SS7 information. A third method used to transfer a suspend and resume event into an SIP network might be termed a direct correlation. The SIP protocol carries the call setup information, but the protocol that carries the voice information is RTP. Within the RTP
information there is a new signaling sent out that indicates that anew set of RTP information that describes the voice content is being received. A suspend event may be identified within the RTP
information which might take the form of an indication that the target data is being sent to is no longer present. This may result in an SIP message that a terminal is going into a receive only mode and no longer transmitting data. A resume event may take the form of an RTP
message that resumes the entire connection.
[0045] In accordance with an embodiment of the present invention, a call involving a resident may be monitored to listen to all of the voices engaged in the call. Thus, additionally or alternatively, at 225 the exemplary embodiment may also monitor the call established at 204 for cadence, frequency, and/or other attributes that occur in speech, and capture data related thereto at 226. At 227 the captured data may be analyzed to determine the number of voices taking part in a call. Using information gathered from the voices such as frequencies, cadence, amplitude and other variables that might occur, detection capabilities that are able to recognize the difference between foreground and background voices may be used at 227 to determine the number of parties that are engaged in the call.
For example, systems employing an embodiment of the present invention might have certain voice characteristics data for the resident and voice characteristics data for the outside called party might have been previously gathered during earlier calls or at the beginning of the current call. This data may be used to make a determination at 227 that a third party, who's voice characteristics data does not match the resident or called party has joined the call. If at 227 it is determined that an additional set of unique voice variables has joined a call, via a prohibited three-way call or by other means, appropriate action may be taken at 210, as discussed in greater detail below.
[0046] In identifying the number of parties on a call it may be helpful to differentiate the call legs and what call leg a voice appears on. For example, a call from a resident of a prison or similar facility may contain many echo voices, due to the physical properties of the facility and the proximity of other individuals. Therefore, at 225-227 it may be more advantageous to monitor the leg of the call coming from the called party to the resident for an additional voice or voices.
[0047] Monitoring a call at 225-227 may also, or alternatively, include monitoring to identify other sounds of interest, such as a gunshots, a scream, people in very panicked states or any other things that might be of interest to an investigator. An investigator may be alerted at 214 as a result of the detection of such a sound of interest or the call flagged for investigation at 211, as discussed in greater detail below.
[0048] Upon detection of an attempt to initiate a three-way call at 206, or detection of a new voice or sound of interest at 225-227, appropriate action may be taken by calling systems employing an embodiment of the present invention at 210. Such appropriate action might include flagging the call for investigation at 211, intervening at 212 to warn the parties to not participate in a three-way call, disconnecting the call at 213, monitoring the call for investigative purposes at 214, alerting authorities at 215, and/or the like.
Alternatively or additionally, if it is determined at 204 that a call has a heightened propensity for a three-way call situation to arise, the response applied at 210 upon detection of an attempt to initiate a three-way call at 206, may be elevated. For example, if a three-way call attempt would normally only be logged or otherwise noted for possible further investigation at 211, the call parties may be warned (212), and in a situation where the call parties might normally only be warned at 212, a call may be disconnected (213) when an attempt to initiate a three-way call is detected.
[0049] Another method embodiment, 300, is illustrated in FIGURE 3 for three-way call detection and/or prevention in a call where both call parties are employing VoIP. At 301 a resident of a controlled-environment facility picks up a phone, such as a phone of a controlled phone system, to place a call. The resident then typically enters a personal identification number or the like at 302 and at 303 the resident enters a number, outside the facility, that he or she wishes to call. At 304 call processing and/or facility management functionality determines if the resident is allowed to make calls and/or call the entered outside telephone number and connects the call, if allowed. In this example, a VoIP
call may be established for the resident using SIP and interconnected via the system VoIP
gateway and a PSTN, which may also employ a VoIP gateway or the like to complete the call.
[0050] Similar to as discussed above concerning step 204 of FIGURE 2, data concerning the resident, such as may be maintained by a controlled-environment facility call management system, a controlled-environment facility information management system, or the like, and/or data related to a called party or number may be used at 304, to determine if there is a propensity for a three-way call situation to arise in a particular call. As a result of a determination at 304 that an elevated propensity for a three-way calling situation exists for a particular call, various steps may be taken. For example, sensitivity of three-way call detection may be elevated at 304.
[0051] At 304 a determination may also be made that a three-way call or other call features are allowed for a particular call. For example, if the called party is an attorney or bail bondsman, three-way calling may be allowed in order for the called attorney or bail bondsman to "conference-in" needed parties (e.g. a witness, surety, etc.) [0052] At 305 in the illustrated example of FIGURE 3, the called, outside party attempts to activate three-way calling. In a VoIP-to-VoIP call where the transmission is being handled between end points or call agents within a VoIP network changes in the routing of a call are typically noted in signaling that occurs out-of-band from the voice, in SIP or other protocol handling the set-up and routing of the call. Once a VoIP to VoIP call is established, any routing change request, such as would occur when a three-way call is initiated, results in SIP updates, or the like, being sent to effect such routing changes. At 306 digital signaling, such as SIP signaling, that occurs between traditional VoIP devices may be monitored to determine when one VoIP device attempts to invite a third party or another gateway to join into the existing VoIP call.
[0053] In-band unauthorized call activity detection may also be employed in accordance with certain embodiments of the present invention for VoIP-to-VoIP
calls. The RTP stream, or the like that is transmitted as voice data might include a sequence numbers commonly referred to as internal session identifiers or internal sequence numbers, per Internet RFC specifications. Whenever a remote gateway reinitiates some element of a data stream, even though it may not have changed terminating information, the gateway may change internal session identifiers or internal sequence numbers per RFC
specifications. Thus, if at 306 a determination is made that internal session identifiers, internal sequence numbers, or the like of a voice data stream has changed in a manner consistent with initiation of unauthorized call activity, such as a three-way call, it may be determined that unauthorized call activity is taking place. For example a jump in sequence numbers that does not correlate in time, or a change in session IDs, can be used in accordance with an embodiment of the present invention as an indication that a remote point in a VoIP-to-VoIP call has substantially changed the content of the stream.
[0054] Alternatively, in a VoIP-only environment, such as employed in the exemplary operational flow 300 of one embodiment, unauthorized call activity, such as the addition of third parties to a call, may be disallowed (320) at the time the call is established, such as at 304, to completely block, and possibly avoid the need to detect, attempts to initiate three-way calling. The disallowance at 320 may be accomplished by setting call features enabled for the VoIP call parties to not include unauthorized call features, such as three-way calling.
[0055] Similar to as discussed above concerning steps 225-227 of FIGURE 2, a call involving a resident may be monitored to listen to all of the voices engaged in the call. At 325, call processing system 120 of the exemplary embodiment may monitor the call established at 304 for cadence, frequency, and/or other attributes that occur in speech.
Monitoring a call at 325 may also, or alternatively, include monitoring to identify other sounds of interest, such as a gunshots, a scream, etcetera. At 326, data associated with the voices or sounds may be captured. At 327, the captured data may be analyzed to determine the number of voices taking part in a call. If at 327 it is determined that an additional set of unique voice variables has joined a call, via a prohibited three-way call or by other means, or that a sound of interest has occurred during the call appropriate action may be taken at 310.
[0056] At 310, the call processing system 120 employing an embodiment of the present invention may take appropriate action in response to detection of an attempt to initiate a three-way call at 306, such as flagging the call for investigation at 311, intervening at 312 to warn the parties to not participate in a three-way call, disconnecting the call at 313, monitoring the call for investigative purposes at 314, alerting authorities at 315, and/or the like. Alternatively or additionally, if it is determined at 304 that a call has a heightened propensity for a three-way call situation to arise, the response applied at 310, upon detection of an attempt to initiate a three-way call at 306, may be elevated. For example, if a three-way call attempt would normally only be logged or otherwise noted for possible further investigation at 311, the call parties may be warned (312), and in a situation where the call parties might normally only be warned at 312, a call may be disconnected (313)when an attempt to initiate a three-way call is detected.
[0057] Although the present invention and its advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims. Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification. As one of ordinary skill in the art will readily appreciate from the disclosure of the present invention, processes, machines, manufacture, compositions of matter, means, methods, or steps, presently existing or later to be developed that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present invention. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, compositions of matter, means, methods, or steps.

Claims (20)

1. A computer-based system, at a plurality of facilities, for managing inmate information, each of the facilities having one or more telephone terminals and computer terminals, the computer-based system located remotely from at least one of the plurality of facilities, the system comprising:
a networking device exchanging Voice over Internet Protocol (VoIP) data packets with call processing gateways at the plurality of facilities over digital data links, the call processing gateways processing the VoIP data packets to or from the telephone terminals for transmission over the digital data links;
an inmate management-system coupled to the networking device for providing shared data access of inmate records to computer terminals at said plurality of facilities, said inmate records created with first inmate information collected from a first computer terminal at a first facility of the plurality of facilities and modified responsive to collecting second inmate information from a second computer terminal at a second facility of the plurality of facilities;
and a call application management system connecting a call to or from the telephone terminals over a telephone carrier network responsive to receiving a request for connecting the call and the call being authorized based on the inmate records provided by the inmate management system.
2. The system of claim 1, wherein said inmate records comprise at least one of physical description of inmates, social security numbers of the inmates, driver's license numbers of the inmates, biometric data of the inmates, information related to the arrest of the inmates, and contact information of third parties associated with the inmates.
3. The system of claim 1, wherein said inmate records comprise a call record associated with inmates.
4. The system of claim 1, wherein said records comprise a call recording associated with inmates.
5. The computer-based system of claim 1, wherein said plurality of facilities comprise a mobile police station.
6. The computer-based system of claim 1, wherein the plurality of facilities comprise different types of facilities.
7. The computer-based system of claim 1, wherein the inmate management system is further configured to control access to the inmate records based on logon information received from the computer terminals.
8. The computer-based system of claim 7, wherein the inmate management system further stores inmate accounts for charging fees to the third parties associated with the inmates for connecting calls placed by the inmates from the plurality of telephone terminals.
9. The computer-based system of claim 8, wherein the inmate accounts are charged for expenses incurred by said inmates for an activity other than placing the calls.
10. A method for managing inmate information at multiple facilities including a first facility and a second facility, each facility comprising multiple telephone terminals and computer terminals, the method carried out in a computer-based system located remotely from at least one of the multiple facilities, the method comprising:
receiving, from a first computer terminal at the first facility, first inmate information associated with an inmate for creating an inmate record;
receiving, from a second computer terminal at the second facility, second inmate information associated with the inmate for modifying the inmate record;
storing the inmate record in the computer-based system for shared access across to the inmate record computer terminals in the multiple facilities;

receiving a request from one of the multiple telephone terminals for connection of a call over a telephone carrier network; and connecting the call from one of the telephone terminals over a telephone carrier network and a digital data link responsive to authorizing the call based on the inmate records stored in the computer-based system.
11. The method of claim 10, wherein said first inmate information is received upon said inmates arrest.
12. The method of claim 11, wherein said first facility comprises a mobile police station.
13. The method of claim 10, further comprising:
modifying said inmate record responsive to transferring the inmate from one facility of the multiple facilities to another facility of the multiple facilities.
14. The method of claim 10, wherein said inmate record comprises at least one of physical description of the inmate, social security number of the inmate, driver's license number of the inmate, biometric data of the inmate, information related to arrest of the inmate, and contact information of third party associated with the inmate.
15. The method of claim 14, further comprising:
notifying said third party of said inmate's arrest based on the contact information.
16. The method of claim 14, further comprising:
establishing an inmate account for charging fees to the third party for connecting calls placed by the inmate associated with the inmate account.
17. The method of claim 16, further comprising:
charging said inmate account for an expense incurred by said inmate for an activity other than placing the calls.
18. The method of claim 16, further comprising:
notifying said third party of transfer of the inmate from one facility of the multiple facilities to another facility of the multiple facilities; and establishing another inmate account associated with said third party responsive to transferring the inmate to the other facility.
19. The method of claim 10, wherein the multiple facilities comprise different types of facilities.
20. The method of claim 10, further comprising:
controlling access to the inmate records based on logon information received from the second computer terminals.
CA2864328A 2006-04-13 2007-04-10 Inmate management and call processing systems and methods Expired - Fee Related CA2864328C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11/403,547 2006-04-13
US11/403,547 US7916845B2 (en) 2006-04-13 2006-04-13 Unauthorized call activity detection and prevention systems and methods for a Voice over Internet Protocol environment
CA2584302A CA2584302C (en) 2006-04-13 2007-04-10 Unauthorized call activity detection and prevention systems and methods for a voice over internet protocol environment

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA2584302A Division CA2584302C (en) 2006-04-13 2007-04-10 Unauthorized call activity detection and prevention systems and methods for a voice over internet protocol environment

Publications (2)

Publication Number Publication Date
CA2864328A1 true CA2864328A1 (en) 2007-10-13
CA2864328C CA2864328C (en) 2016-01-12

Family

ID=38283260

Family Applications (6)

Application Number Title Priority Date Filing Date
CA2584302A Active CA2584302C (en) 2006-04-13 2007-04-10 Unauthorized call activity detection and prevention systems and methods for a voice over internet protocol environment
CA2864328A Expired - Fee Related CA2864328C (en) 2006-04-13 2007-04-10 Inmate management and call processing systems and methods
CA2864316A Expired - Fee Related CA2864316C (en) 2006-04-13 2007-04-10 Centralized call processing
CA2864329A Expired - Fee Related CA2864329C (en) 2006-04-13 2007-04-10 Call processing with voice over internet protocol transmission
CA2864326A Expired - Fee Related CA2864326C (en) 2006-04-13 2007-04-10 Centralized call processing
CA2864267A Abandoned CA2864267A1 (en) 2006-04-13 2007-04-10 Inmate management and call processing systems and methods

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA2584302A Active CA2584302C (en) 2006-04-13 2007-04-10 Unauthorized call activity detection and prevention systems and methods for a voice over internet protocol environment

Family Applications After (4)

Application Number Title Priority Date Filing Date
CA2864316A Expired - Fee Related CA2864316C (en) 2006-04-13 2007-04-10 Centralized call processing
CA2864329A Expired - Fee Related CA2864329C (en) 2006-04-13 2007-04-10 Call processing with voice over internet protocol transmission
CA2864326A Expired - Fee Related CA2864326C (en) 2006-04-13 2007-04-10 Centralized call processing
CA2864267A Abandoned CA2864267A1 (en) 2006-04-13 2007-04-10 Inmate management and call processing systems and methods

Country Status (5)

Country Link
US (2) US7916845B2 (en)
EP (1) EP1845698A1 (en)
AU (1) AU2007201590A1 (en)
CA (6) CA2584302C (en)
IL (1) IL182515A0 (en)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7899167B1 (en) 2003-08-15 2011-03-01 Securus Technologies, Inc. Centralized call processing
US8000269B1 (en) 2001-07-13 2011-08-16 Securus Technologies, Inc. Call processing with voice over internet protocol transmission
US9020114B2 (en) 2002-04-29 2015-04-28 Securus Technologies, Inc. Systems and methods for detecting a call anomaly using biometric identification
US7916845B2 (en) 2006-04-13 2011-03-29 Securus Technologies, Inc. Unauthorized call activity detection and prevention systems and methods for a Voice over Internet Protocol environment
US7860222B1 (en) 2003-11-24 2010-12-28 Securus Technologies, Inc. Systems and methods for acquiring, accessing, and analyzing investigative information
US9026468B2 (en) 2002-04-29 2015-05-05 Securus Technologies, Inc. System and method for proactively establishing a third-party payment account for services rendered to a resident of a controlled-environment facility
US7333798B2 (en) 2002-08-08 2008-02-19 Value Added Communications, Inc. Telecommunication call management and monitoring system
US8509736B2 (en) 2002-08-08 2013-08-13 Global Tel*Link Corp. Telecommunication call management and monitoring system with voiceprint verification
US7529357B1 (en) 2003-08-15 2009-05-05 Evercom Systems, Inc. Inmate management and call processing systems and methods
US7783021B2 (en) * 2005-01-28 2010-08-24 Value-Added Communications, Inc. Digital telecommunications call management and monitoring system
US7813481B1 (en) * 2005-02-18 2010-10-12 At&T Mobility Ii Llc Conversation recording with real-time notification for users of communication terminals
US8660039B2 (en) * 2007-01-08 2014-02-25 Intracom Systems, Llc Multi-channel multi-access voice over IP intercommunication systems and methods
US8675850B2 (en) * 2008-01-17 2014-03-18 Google Inc. Content delivery during call idle time
US8542802B2 (en) 2007-02-15 2013-09-24 Global Tel*Link Corporation System and method for three-way call detection
US7953216B2 (en) 2007-05-04 2011-05-31 3V Technologies Incorporated Systems and methods for RFID-based access management of electronic devices
US10796392B1 (en) 2007-05-22 2020-10-06 Securus Technologies, Llc Systems and methods for facilitating booking, bonding and release
US20090168985A1 (en) * 2007-12-31 2009-07-02 Motorola, Inc. Method and apparatus for an internet protocol multimedia subsystem-based three-way call
US20090279532A1 (en) * 2008-05-06 2009-11-12 Custom Teleconnect, Inc. Tcp/ip based voice communication system
US9225838B2 (en) 2009-02-12 2015-12-29 Value-Added Communications, Inc. System and method for detecting three-way call circumvention attempts
US9271145B2 (en) * 2011-02-09 2016-02-23 Brian Francis Byrne System and method for controlling, monitoring and recording of wireless communications in penal institutions
US20130044867A1 (en) * 2011-08-17 2013-02-21 Jay D. Walters Use of voice biometric software to analyze inmate telephone calls
US9118751B2 (en) * 2013-03-15 2015-08-25 Marchex, Inc. System and method for analyzing and classifying calls without transcription
US9219741B2 (en) * 2013-05-02 2015-12-22 Airwatch, Llc Time-based configuration policy toggling
US9426302B2 (en) * 2013-06-20 2016-08-23 Vonage Business Inc. System and method for non-disruptive mitigation of VOIP fraud
US9055167B1 (en) * 2014-03-04 2015-06-09 Securus Technologies, Inc. Management and dissemination of information from a controlled-environment facility
US9479651B1 (en) 2014-03-04 2016-10-25 Securus Technologies, Inc. Management and dissemination of information from a controlled-environment facility
US20150294085A1 (en) * 2014-04-14 2015-10-15 Elwha LLC, a limited company of the State of Delaware Devices, systems, and methods for automated enhanced care rooms
US9232052B1 (en) * 2014-11-21 2016-01-05 Marchex, Inc. Analyzing voice characteristics to detect fraudulent call activity and take corrective action without using recording, transcription or caller ID
US9881178B1 (en) * 2015-09-22 2018-01-30 Intranext Software, Inc. Method and apparatus for protecting sensitive data
US10609094B1 (en) * 2016-10-05 2020-03-31 Securus Technologies, Inc. Controlled-environment facility resident contact tools for intelligent controlled-environment facility resident communication and/or media device interfaces
US9614974B1 (en) * 2016-11-23 2017-04-04 Global Tel*Link Corp. Utilizing sip messages to determine the status of a remote terminal in VoIP communication systems
CA3058637A1 (en) 2017-03-30 2018-10-04 Signalence, Inc. Monitoring cell phone usage in correctional facilities
US9930088B1 (en) 2017-06-22 2018-03-27 Global Tel*Link Corporation Utilizing VoIP codec negotiation during a controlled environment call
CN108123959B (en) * 2017-12-30 2020-11-20 世纪网通成都科技有限公司 Computer readable storage medium for restoring VOIP call ticket and VOIP call ticket restoring system using the same
US11445363B1 (en) 2018-06-21 2022-09-13 Intranext Software, Inc. Method and apparatus for protecting sensitive data
RU2695983C1 (en) * 2018-07-16 2019-07-29 Открытое Акционерное Общество "Информационные Технологии И Коммуникационные Системы" Method of filtering secure network connections in a digital data network
US10686935B1 (en) * 2018-10-29 2020-06-16 Securus Technologies, Inc. Fraud detection for controlled-environment facility communications system

Family Cites Families (301)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3096404A (en) 1961-08-24 1963-07-02 Lawrence J Semon Telephone switchboard patching unit
US3113185A (en) 1962-03-26 1963-12-03 Lawrence J Semon Monitor control unit
US3350515A (en) 1964-07-06 1967-10-31 Lawrence J Semon Telephone line testing unit
US3398288A (en) 1965-02-16 1968-08-20 Air Force Usa Velocity selector using light conducting rods and a plurality of light beam interrupters
US3397288A (en) 1965-10-04 1968-08-13 Lawrence J. Semon Telephone patching circuit
US3676605A (en) 1969-03-18 1972-07-11 Telephonic Equipment Corp Spike monitoring apparatus
US3626107A (en) 1969-08-29 1971-12-07 Stromberg Carlson Corp Three-way calling and call-waiting arrangements for step-by-step telephone systems
US3660610A (en) 1970-04-24 1972-05-02 Itt Conference call circuit
US3798382A (en) 1972-05-22 1974-03-19 Ford Ind Inc Voice-monitoring control circuit
US3829617A (en) 1972-09-01 1974-08-13 Gte Automatic Electric Lab Inc Central automatic message accounting system
US3813495A (en) 1972-12-11 1974-05-28 Itt Memory control for toll systems
US3864519A (en) 1973-05-11 1975-02-04 Ford Ind Inc Speech-gap-responsive control apparatus
US3851121A (en) 1973-12-10 1974-11-26 Gen Telephone Co Of California Automatic remote service monitoring system
IT1014614B (en) 1974-04-24 1977-04-30 Sits Soc It Telecom Siemens CIRCUIT FOR DETECTING THE PRESENCE OF ACTIVITY IN THE PHONE BAND IN A TELEPHONE JOINT
US4002848A (en) 1974-11-14 1977-01-11 Reliable Electric Company Toll fraud eliminator for telephone systems
US3952160A (en) 1974-11-14 1976-04-20 Bell Telephone Laboratories, Incorporated Coin telephone arrangement to obviate acoustically coupled fraud
US3997731A (en) 1975-04-14 1976-12-14 International Telephone And Telegraph Corporation Apparatus for custom calling features in a telephone system
US4055730A (en) 1975-05-29 1977-10-25 Comex Systems, Inc. Circuit for detecting dial pulses
US4027109A (en) 1975-06-27 1977-05-31 Smith Lloyd M Telephone call diverting system
US4001513A (en) 1975-07-31 1977-01-04 Northern Electric Company Limited Method and apparatus for the detection of fraudulent toll telephone calls
US4054756A (en) 1976-09-29 1977-10-18 Bell Telephone Laboratories, Incorporated Method and apparatus for automating special service call handling
US4122308A (en) 1977-06-03 1978-10-24 Utility Verification Corp. Telephone call metering device
US4196317A (en) 1978-01-20 1980-04-01 Bartelink E H B Telephone intercom system
US4156799A (en) 1978-08-16 1979-05-29 Dycon International, Inc. Automatic disconnect circuit
US4188508A (en) 1978-08-21 1980-02-12 Brindle Patrick A Telephone call restricting apparatus
US4319091A (en) 1979-10-15 1982-03-09 Dictaphone Corporation Dial pulse restorer
US4371752A (en) 1979-11-26 1983-02-01 Ecs Telecommunications, Inc. Electronic audio communication system
US4602129A (en) 1979-11-26 1986-07-22 Vmx, Inc. Electronic audio communications system with versatile message delivery
US4310726A (en) 1980-02-04 1982-01-12 Bell Telephone Laboratories, Incorporated Method of identifying a calling station at a call terminating facility
US4326123A (en) 1980-02-22 1982-04-20 Charles Graham Telephone credit card system
US4333056A (en) 1980-04-07 1982-06-01 Banc-By-Phone Corporation Automatic gain control circuit with non-negative exponential release
US4387274A (en) 1981-06-15 1983-06-07 Gti Corporation Hook flash signal actuated telephone control device
US4405833A (en) 1981-06-17 1983-09-20 Tbs International, Inc. Telephone call progress tone and answer identification circuit
US4445211A (en) 1981-10-29 1984-04-24 Gte Automatic Electric Labs Inc. Arrangement for multiple custom calling
GB2134749B (en) 1982-01-19 1985-09-25 John Mildwater Telephone call cost calculator
US4585904A (en) 1982-02-05 1986-04-29 General Telephone Inc. Programmable computerized telephone call cost metering device
US4439636A (en) 1982-03-09 1984-03-27 Martha Newkirk Credit card actuated telecommunication access network
US4477698A (en) 1982-09-07 1984-10-16 Melita Electronics Labs, Inc. Apparatus for detecting pick-up at a remote telephone set
FR2535854A1 (en) 1982-11-10 1984-05-11 Cit Alcatel METHOD AND DEVICE FOR EVALUATING THE LEVEL OF NOISE ON A TELEPHONE ROUTE
US4518825A (en) 1983-10-11 1985-05-21 Telecalc, Inc. Telephone interconnect detection system
US4559416A (en) 1983-10-12 1985-12-17 Morgan Industries, Inc. Telephone line activity monitor
US4595983A (en) 1983-10-27 1986-06-17 Reliance Electric Company Central office powered credit only telephone paystation
US4538030A (en) 1983-12-08 1985-08-27 At&T Information Systems Inc. Method and apparatus for establishing telephone calling costs
JPS60162364A (en) 1984-02-03 1985-08-24 Nippo Tsushin Kogyo Kk Communication system having aural operation guide function
US4696028A (en) 1984-03-26 1987-09-22 Dytel Corporation PBX Intercept and caller interactive attendant bypass system
US4670628A (en) 1984-04-19 1987-06-02 Boratgis James P Reprogrammable call forwarding device
DE3422409A1 (en) 1984-06-16 1985-12-19 Standard Elektrik Lorenz Ag, 7000 Stuttgart DEVICE FOR RECOGNIZING AND IMPLEMENTING ELECTION INFORMATION AND CONTROL INFORMATION FOR PERFORMANCE CHARACTERISTICS OF A TELEPHONE SWITCHING SYSTEM
US4593157A (en) 1984-09-04 1986-06-03 Usdan Myron S Directory interface and dialer
US5375161A (en) 1984-09-14 1994-12-20 Accessline Technologies, Inc. Telephone control system with branch routing
JPS6192069A (en) 1984-10-12 1986-05-10 Tamura Electric Works Ltd Alarm information transmission system of public telephone
US4712230A (en) 1984-11-15 1987-12-08 Rice John E Monitoring and recording apparatus for connection to a telephone line
US4629829A (en) 1984-12-14 1986-12-16 Motorola, Inc. Full duplex speakerphone for radio and landline telephones
DK608684D0 (en) 1984-12-18 1984-12-18 Gnt Automatic As PAYMENT PHONE
US4626630A (en) 1984-12-20 1986-12-02 Louis Orenbuch Telephone call forwarding device
US4686699A (en) 1984-12-21 1987-08-11 International Business Machines Corporation Call progress monitor for a computer telephone interface
JPS61205065A (en) 1985-03-08 1986-09-11 Tamura Electric Works Ltd Public telephone set
US4698840A (en) 1985-03-22 1987-10-06 Seiscor Technologies, Inc. Coin operated telephone
US4768227A (en) 1985-03-22 1988-08-30 Seiscor Technologies, Inc. Coil operated telephone
US5351285A (en) 1985-07-10 1994-09-27 First Data Resources Inc. Multiple format telephonic interface control system
US4723273A (en) 1985-09-25 1988-02-02 American Telephone And Telegraph Company, At&T Bell Laboratories Discretionary call forwarding
US4791640A (en) 1985-10-21 1988-12-13 American Telephone And Telegraph Company, At&T Bell Laboratories Call charging arrangement
US4746786A (en) 1985-11-19 1988-05-24 Siemens Aktiengesellschaft Method and apparatus for evaluating units stored on credit cards
GB8528951D0 (en) 1985-11-25 1986-01-02 British Telecomm Signalling detection
US4731818A (en) 1985-12-05 1988-03-15 Communication Equipment & Engineering Co. Self-computing credit card telephone paystation method and system
US4696031A (en) 1985-12-31 1987-09-22 Wang Laboratories, Inc. Signal detection and discrimination using waveform peak factor
US4797910A (en) 1986-05-07 1989-01-10 American Telphone And Telegraph Company, At&T Bell Laboratories Automated operator assistance calls with voice processing
US4922519A (en) 1986-05-07 1990-05-01 American Telephone And Telegraph Company Automated operator assistance calls with voice processing
US4727577A (en) 1986-05-30 1988-02-23 American Telephone And Telegraph Company, At&T Bell Laboratories Method of and apparatus for recording information on the accumulated usage of a trunk
FR2600850A1 (en) 1986-06-30 1987-12-31 Hedin Michel Electronic device which is independent or integrated with a telephone set, making it possible to determine whilst viewing it the cost of telephone communications
US4726057A (en) 1986-07-28 1988-02-16 AT&T Information Systems Inc. American Telephone & Telegraph Company Answer detection method and apparatus for coin telephone sets
US4777647A (en) 1986-09-29 1988-10-11 Digital Telecommunications Systems, Inc. Pay station telephone interface
US4916733A (en) 1986-09-29 1990-04-10 Digital Telecommunications Systems, Inc. Pay station telephone call answer supervision apparatus
US4943995A (en) 1986-10-08 1990-07-24 At&T Bell Laboratories Semi-automated customer information system
JPS6399656A (en) 1986-10-15 1988-04-30 Toshiba Corp Telephone terminal equipment
JPS63100850A (en) 1986-10-17 1988-05-02 Tandei Electron Japan Kk Telephone line monitor
US4766604A (en) 1986-11-07 1988-08-23 Messagephone, Inc. Method for receiving and delivering voice messages
IL80676A0 (en) 1986-11-18 1987-02-27 Aerotel Ltd Pulse detector for counting dial generated pulses
US4922520A (en) 1986-12-31 1990-05-01 M. A. Kempner, Inc. Automatic telephone polling system
US4769834A (en) 1987-01-30 1988-09-06 American Telephone And Telegraph Company And At&T Information Systems Inc. Inter-exchange carrier access
US4799255A (en) 1987-01-30 1989-01-17 American Telephone And Telegraph Company - At&T Information Systems Communication facilities access control arrangement
US4803718A (en) 1987-03-06 1989-02-07 Tree Technologies Corporation Hold detecting and control circuit for a key telephone system
US4937856A (en) 1987-06-01 1990-06-26 Natarajan T Raj Digital voice conferencing bridge
CA1270585C (en) 1987-06-19 1990-06-19 Rotary dial pulse receiver
US4782516A (en) 1987-06-25 1988-11-01 AT&T Information Systems Inc. American Telephone and Telegraph Company Fraud prevention in a public telephone station
US4924488A (en) 1987-07-28 1990-05-08 Enforcement Support Incorporated Multiline computerized telephone monitoring system
US4815120A (en) 1987-07-28 1989-03-21 Enforcement Support Incorporated Computerized telephone monitoring system
US4794642A (en) 1987-09-24 1988-12-27 American Telephone And Telegraph Company, At&T Bell Laboratories Call screening in a public telephone station
US4839917A (en) 1987-10-29 1989-06-13 Oliver Stewart W Universal line status monitoring and response system
US4850011A (en) 1988-01-13 1989-07-18 Redcom Laboratories, Inc. Key telephone system providing selection of key or PBX operational modes
US4947422A (en) 1988-03-07 1990-08-07 Digital Telecommunications Systems, Inc. Personalized telephone for automatic access to operator services
US4935956A (en) 1988-05-02 1990-06-19 Telequip Ventures, Inc. Automated public phone control for charge and collect billing
US4991203A (en) 1988-05-17 1991-02-05 Canon Kabushiki Kaisha Line switching apparatus and method
JP2748405B2 (en) * 1988-05-27 1998-05-06 株式会社日立メディコ X-ray imaging equipment
US5033088A (en) 1988-06-06 1991-07-16 Voice Processing Corp. Method and apparatus for effectively receiving voice input to a voice recognition system
US4825460A (en) 1988-06-22 1989-04-25 Messagephone, Inc. Line interface unit for caller-controlled receipt and delivery of voice messages
US4901341A (en) 1988-06-22 1990-02-13 Messager Partners Method and apparatus for caller-controlled receipt and delivery of voice messages
US4896348A (en) 1988-07-01 1990-01-23 Palco Telecom Inc. Paystation monitor circuit to prevent fraudulent use
US5109405A (en) 1988-07-11 1992-04-28 Dytel Corporation Automated call screening
US4899358A (en) 1988-08-08 1990-02-06 American Telephone And Telegraph Company At&T Bell Laboratories Call announcement arrangement
US5369699A (en) 1988-08-29 1994-11-29 Bi Incorporated Adaptable personnel supervisory system with automatic fee collection
US4899375A (en) 1988-09-23 1990-02-06 American Telephone & Telegraph Company, At&T Bell Laboratories More efficient call handling for operator assistance calls
US4937862A (en) 1988-10-14 1990-06-26 Enforcement Support Incorporated Remote monitoring device
US5020095A (en) 1988-11-16 1991-05-28 Dytel Corporation Interactive call distribution processor
US4920562A (en) 1989-01-23 1990-04-24 Intellicall, Inc. Automatic generation of billing records at a telephone paystation
US4890317A (en) 1989-01-23 1989-12-26 Intellicall, Inc. Automatic validation of telephone account numbers
US5093858A (en) 1989-01-23 1992-03-03 Intellicall, Inc. Method and apparatus for performing an automated collect call
US4933966A (en) 1989-01-23 1990-06-12 Intellicall, Inc. Method and apparatus for performing an automated collect call
US4908852A (en) 1989-01-23 1990-03-13 Intellicall, Inc. Method and apparatus for altering the access format of telephone calls
US4993062A (en) 1989-02-10 1991-02-12 Communications Equipment And Engineering Company Telephone control system including stored blocked and allowed telephone numbers
US5274698A (en) 1989-02-28 1993-12-28 Samsung Electronics Co., Ltd. Method of restricting telephone calls in a private branch exchange system
US5023869A (en) 1989-03-27 1991-06-11 Alberta Telecommunications Research Centre Method and apparatus for maximizing the transmission capacity of a multi-channel bidirectional communications link
JP2595090B2 (en) 1989-04-19 1997-03-26 株式会社日立製作所 Echo canceller with test function and communication device having the echo canceller
US4979214A (en) 1989-05-15 1990-12-18 Dialogic Corporation Method and apparatus for identifying speech in telephone signals
US4932062A (en) 1989-05-15 1990-06-05 Dialogic Corporation Method and apparatus for frequency analysis of telephone signals
US4933967A (en) 1989-06-01 1990-06-12 At&T Company Automatically-effected move of a subscriber between electronic message service systems in a network
US5150357A (en) 1989-06-12 1992-09-22 Emil Hopner Integrated communications system
US5063593A (en) 1989-08-23 1991-11-05 Samsung Electronics Co., Ltd. Tone-type recognition method
US5003595A (en) 1989-08-29 1991-03-26 At&T Bell Laboratories Secure dial access to computer systems
US5054059A (en) 1989-10-24 1991-10-01 Stern Telecommunications Corp. Telephone dialing system for specialized services
US4947425A (en) 1989-10-27 1990-08-07 At&T Bell Laboratories Echo measurement arrangement
US4993068A (en) 1989-11-27 1991-02-12 Motorola, Inc. Unforgeable personal identification system
US5220501A (en) 1989-12-08 1993-06-15 Online Resources, Ltd. Method and system for remote delivery of retail banking services
USRE37073E1 (en) 1990-01-26 2001-02-27 Intervoice Limited Partnership Automatic call back system and method of operation
US5155761A (en) 1990-01-26 1992-10-13 Intervoice, Inc. Automatic call back system and method of operation
US5022067A (en) 1990-04-20 1991-06-04 Millicom Incorporated Telephone call security system
US5222120A (en) 1990-04-23 1993-06-22 Mci Communications Corporation Long distance telephone switching system with enhanced subscriber services
US5023906A (en) 1990-04-24 1991-06-11 The Telephone Connection Method for monitoring telephone call progress
US5131024A (en) 1990-05-16 1992-07-14 Messager Partners Method and apparatus for providing proactive call services following call completion
GB9020410D0 (en) 1990-09-19 1990-10-31 Stc Plc Sequence synchronisation
US5335266A (en) 1990-10-01 1994-08-02 United States Advance Network, Inc. Automated telecommunication peripheral system
US5113430A (en) 1990-10-01 1992-05-12 United States Advanced Network, Inc. Enhanced wide area audio response network
US5193110A (en) 1990-10-09 1993-03-09 Boston Technology, Incorporated Integrated services platform for telephone communication system
US5181237A (en) 1990-10-12 1993-01-19 At&T Bell Laboratories Automation of telephone operator assistance calls
US5163083A (en) 1990-10-12 1992-11-10 At&T Bell Laboratories Automation of telephone operator assistance calls
US5255305A (en) 1990-11-01 1993-10-19 Voiceplex Corporation Integrated voice processing system
US5164989A (en) 1990-12-11 1992-11-17 Octel Communications Corporation Echo cancellation methods and apparatus for voice processing systems
WO1992011723A1 (en) 1990-12-21 1992-07-09 Codex Corporation Call progress decoder for multiple cadenced tones on telephone lines
US5200995A (en) 1990-12-24 1993-04-06 Gaukel John J Universal outgoing call restriction circuit
AU8986091A (en) 1991-01-11 1992-07-16 Strategic Telecom Access phone
IL97250A (en) 1991-02-15 1996-10-16 Druckman Gil Telephone adaptor for telephone handsets
US5218636A (en) 1991-03-07 1993-06-08 Dialogic Corporation Dial pulse digit detector
US5134651A (en) 1991-04-18 1992-07-28 Codecom Rural Communications, Inc. Method and apparatus for providing answer supervision and an autonomous pay telephone incorporating the same
US5276731A (en) 1991-04-26 1994-01-04 Rolm Company Method and apparatus for handling incoming telephone calls
US5309505A (en) 1991-05-20 1994-05-03 Inventions, Inc. Automated voice system for improving agent efficiency and improving service to parties on hold
US5229764A (en) 1991-06-20 1993-07-20 Matchett Noel D Continuous biometric authentication matrix
US5210789A (en) 1991-06-28 1993-05-11 International Telecharge, Inc. Interactive telephone operator terminal
US5345501A (en) 1991-07-15 1994-09-06 Bell Atlantic Network Services, Inc. Telephone central office based method of and system for processing customer orders
US5187740A (en) 1991-10-01 1993-02-16 Mci Communications Corporation Method and apparatus for telephone call reorigination
FI915196A (en) 1991-11-04 1993-05-05 Nokia Telecommunications Oy Foerfarande Foer convergence of the eco-market and the environment
US5483582A (en) 1991-12-12 1996-01-09 Messager Partners Applications platform for a telephone system gateway interface
US5153907A (en) 1991-12-12 1992-10-06 Messager Partners, Inc. Telephone system gateway interface
US5327489A (en) 1991-12-16 1994-07-05 At&T Bell Laboratories Method and apparatus for monitoring a network for customer signaling during the term of a call
US5442696A (en) 1991-12-31 1995-08-15 At&T Corp. Method and apparatus for detecting control signals
US5247569A (en) 1992-01-13 1993-09-21 Intervoice, Inc. System and method for controlling outbound and inbound calls in a telephone communication system
US5305312A (en) 1992-02-07 1994-04-19 At&T Bell Laboratories Apparatus for interfacing analog telephones and digital data terminals to an ISDN line
US5216702A (en) 1992-02-27 1993-06-01 At&T Bell Laboratories Nonintrusive speech level and dynamic noise measurements
US5325427A (en) 1992-03-23 1994-06-28 At&T Bell Laboratories Apparatus and robust method for detecting tones
US5311589A (en) 1992-03-31 1994-05-10 At&T Bell Laboratories Apparatus and method for audible signaling tone recognition
US5583920A (en) 1992-04-17 1996-12-10 Bell Atlantic Intelligent peripheral in video dial tone network
US5329578A (en) 1992-05-26 1994-07-12 Northern Telecom Limited Personal communication service with mobility manager
US5799068A (en) 1992-06-29 1998-08-25 Elonex I.P. Holdings Ltd. Smart phone integration with computer systems
CA2093043C (en) 1992-06-30 1997-04-08 Eugene Gerber Telephone usage monitoring arrangement
US5809125A (en) 1992-07-09 1998-09-15 Gammino; John R. Method and apparatus for intercepting potentially fraudulent telephone calls
US5539812A (en) 1992-07-29 1996-07-23 Kitchin; Dwight W. Method and apparatus for detecting an attempted three-way conference call on a remote telephone
US5319702A (en) 1992-07-29 1994-06-07 Tele-Matic Corporation Method and apparatus for detecting and responding to hook flash events occurring on a remote telephone
US5325421A (en) 1992-08-24 1994-06-28 At&T Bell Laboratories Voice directed communications system platform
US5566229A (en) 1992-08-24 1996-10-15 At&T Voice directed communications system employing shared subscriber identifiers
SE518247C2 (en) 1992-08-28 2002-09-17 Ericsson Telefon Ab L M Software structure for a telecommunications system
US5283829A (en) 1992-10-01 1994-02-01 Bell Communications Research, Inc. System and method for paying bills electronically
US5345595A (en) 1992-11-12 1994-09-06 Coral Systems, Inc. Apparatus and method for detecting fraudulent telecommunication activity
US5351287A (en) 1992-12-11 1994-09-27 Bell Communications Research, Inc. Method and apparatus for data evidence collection
EP0603436B1 (en) 1992-12-21 1999-03-03 STMicroelectronics Pte Ltd. Parallel phone detection circuit
US5452347A (en) 1993-01-07 1995-09-19 Rolm Company Dual-line telephone bridging device that gives remote telephones access to communications features
US5471519A (en) 1993-02-26 1995-11-28 Bellsouth Corporation Communications monitoring and control system
US5428662A (en) 1993-03-01 1995-06-27 Dialogic Corporation Detecting make-break clicks on a telephone line
US5461665A (en) 1993-03-01 1995-10-24 Executone Information Systems, Inc. Voice processing system
CA2117035C (en) 1993-03-05 1997-02-18 Akihiko Sugiyama Method and apparatus for rapid identification of an unknown system based on an echo signal having a plurality of dispersive portions
US5450485A (en) 1993-03-08 1995-09-12 Dialogic Corporation Detecting whether a telephone line has been disconnected
US5287401A (en) 1993-03-15 1994-02-15 Intel Corporation Apparatus and method for a modem for detecting a call waiting signal
US5416831A (en) 1993-04-15 1995-05-16 Bellsouth Corporation System for communicating with an ADSI-compatible telephone via a service circuit node
KR960002355B1 (en) 1993-05-31 1996-02-16 삼성전자주식회사 Message recording set for keyphone system
US5485507A (en) 1993-08-20 1996-01-16 Gateway Technologies, Inc. Integrated commissary system
US5535261A (en) 1993-08-20 1996-07-09 Gateway Technologies, Inc. Selectively activated integrated real-time recording of telephone conversations
US5377258A (en) 1993-08-30 1994-12-27 National Medical Research Council Method and apparatus for an automated and interactive behavioral guidance system
US5504810A (en) 1993-09-22 1996-04-02 At&T Corp. Telecommunications fraud detection scheme
US5465387A (en) 1993-10-08 1995-11-07 At&T Corp. Adaptive fraud monitoring and control
US5606604A (en) 1993-12-13 1997-02-25 Lucent Technologies Inc. System and method for preventing fraud upon PBX through a remote maintenance or administration port
US5465293A (en) 1993-12-30 1995-11-07 At&T Corp. Apparatus and method for screening foreign incollect calls to domestic non-collect call telephone numbers to reduce fraud
US5473686A (en) 1994-02-01 1995-12-05 Tandy Corporation Echo cancellation apparatus
US5844978A (en) 1994-02-17 1998-12-01 Bellsouth Corporation Multi-user telephone line
US7106843B1 (en) 1994-04-19 2006-09-12 T-Netix, Inc. Computer-based method and apparatus for controlling, monitoring, recording and reporting telephone access
US7248680B1 (en) * 1994-04-19 2007-07-24 T-Netix, Inc. Computer-based method and apparatus for controlling, monitoring, recording and reporting telephone access
US20010036821A1 (en) 1994-04-19 2001-11-01 Jay L. Gainsboro Computer-based method and apparatus for controlling, monitoring, recording and reporting wireless communications
US5682386A (en) 1994-04-19 1997-10-28 Multi-Tech Systems, Inc. Data/voice/fax compression multiplexer
US5926533A (en) 1994-04-19 1999-07-20 Opus Telecom, Inc. Computer-based method and apparatus for controlling, monitoring, recording and reporting telephone access
US5655013A (en) 1994-04-19 1997-08-05 Gainsboro; Jay L. Computer-based method and apparatus for controlling, monitoring, recording and reporting telephone access
US5497414A (en) 1994-05-04 1996-03-05 Bell Atlantic Network Services, Inc. Telephone system processing of designated caller ID private calls
EP1184998B1 (en) 1994-05-06 2006-07-19 NTT Mobile Communications Network Inc. Echo canceler and echo path estimating method
US5960064A (en) 1994-06-23 1999-09-28 At&T Corp Call screening method and apparatus for use in completing telephone calls
US5577116A (en) 1994-09-16 1996-11-19 North Carolina State University Apparatus and method for echo characterization of a communication channel
US5740231A (en) 1994-09-16 1998-04-14 Octel Communications Corporation Network-based multimedia communications and directory system and method of operation
US5742905A (en) 1994-09-19 1998-04-21 Bell Communications Research, Inc. Personal communications internetworking
US5524141A (en) 1994-09-22 1996-06-04 Bell Communications Research, Inc. System and method for providing directory information over a telephony network using ADSI
CA2159384C (en) 1994-10-18 1998-09-22 Barry H. Freedman Method for processing collect telephone calls
AU4469896A (en) 1994-12-23 1996-07-19 Southwestern Bell Technology Resources, Inc. Flexible network platform and call processing system
US5583934A (en) 1995-03-03 1996-12-10 Advanced Micro Devices, Inc. DC level control for an electronic telephone line card
US5907602A (en) 1995-03-30 1999-05-25 British Telecommunications Public Limited Company Detecting possible fraudulent communication usage
US5524145A (en) 1995-04-06 1996-06-04 Bell Atlantic Network Services, Inc. Incoming call completion threshold restriction
US5617471A (en) 1995-05-25 1997-04-01 Rogers; Wesley D. Telecommunications system for transferring a telephone call
US5619561A (en) 1995-06-22 1997-04-08 Reese; Morris Call-waiting and caller identification with three-way conversations arrangements
US5724404A (en) 1995-07-03 1998-03-03 Garcia; Max Integrated international telephone circuit monitoring system
US5651056A (en) 1995-07-13 1997-07-22 Eting; Leon Apparatus and methods for conveying telephone numbers and other information via communication devices
US5757781A (en) 1995-09-14 1998-05-26 Lucent Technologies Inc. Dynamic insertion and removal of multi-media call-handling resources into/from video calls to provide calling features
US5745558A (en) 1995-10-27 1998-04-28 United States Advanced Network, Inc. Three-way call detection and response system
US5805685A (en) 1995-11-15 1998-09-08 Gateway Technologies, Inc. Three way call detection by counting signal characteristics
US5796811A (en) 1995-11-15 1998-08-18 Gateway Technologies, Inc. Three way call detection
GB2308040A (en) 1995-12-09 1997-06-11 Northern Telecom Ltd Telecommunications system
US6052454A (en) 1996-01-16 2000-04-18 Global Tel*Link Corp. Telephone apparatus with recording of phone conversations on massive storage
CA2217050C (en) 1996-02-01 2001-07-24 Northern Telecom Limited Telecommunications functions management system
US5867559A (en) 1996-02-20 1999-02-02 Eis International, Inc. Real-time, on-line, call verification system
US5777558A (en) 1996-02-29 1998-07-07 Motorola, Inc. Method for detecting fraudulent use of a communication system
US5946386A (en) 1996-03-11 1999-08-31 Xantel Corporation Call management system with call control from user workstation computers
US5937042A (en) 1996-03-19 1999-08-10 Mci Communications Corporation Method and system for rehome optimization
US5862519A (en) 1996-04-02 1999-01-19 T-Netix, Inc. Blind clustering of data with application to speech processing systems
US6487200B1 (en) 1996-04-04 2002-11-26 At&T Corp. Packet telephone system
US5745553A (en) 1996-04-16 1998-04-28 At&T Corp. On-demand communications services
US5867562A (en) 1996-04-17 1999-02-02 Scherer; Gordon F. Call processing system with call screening
US5768355A (en) 1996-05-16 1998-06-16 Science Dynamics Corporation Three-way call detection system
EP0814583A2 (en) 1996-06-20 1997-12-29 International Business Machines Corporation Method and system for minimizing the connection set up time in high speed packet switching networks
US5923746A (en) 1996-09-18 1999-07-13 Rockwell International Corp. Call recording system and method for use with a telephonic switch
US6366653B1 (en) 1996-09-19 2002-04-02 Acer Incorporated System for integrating a telephone to a computer
CA2266620A1 (en) 1996-09-25 1998-04-02 British Telecommunications Public Limited Company Apparatus for communications service provision
GB9620082D0 (en) 1996-09-26 1996-11-13 Eyretel Ltd Signal monitoring apparatus
US6075843A (en) 1996-12-05 2000-06-13 Intervoice Limited Partnership User device-independent transaction model
US6169789B1 (en) 1996-12-16 2001-01-02 Sanjay K. Rao Intelligent keyboard system
US5875230A (en) 1996-12-20 1999-02-23 At&T Corp. Interactive measurement system and method for telecommunication networks
US6141406A (en) 1997-03-27 2000-10-31 T-Netix, Inc. Method and apparatus for detecting a secondary destination of a telephone call based on changes in the telephone signal path
AU8576798A (en) 1997-07-25 1999-02-16 Starvox, Inc. Apparatus and method for integrated voice gateway
US6529602B1 (en) 1997-08-19 2003-03-04 Walker Digital, Llc Method and apparatus for the secure storage of audio signals
US6064963A (en) 1997-12-17 2000-05-16 Opus Telecom, L.L.C. Automatic key word or phrase speech recognition for the corrections industry
US6097804A (en) 1997-12-23 2000-08-01 Bell Canada Method and system for completing a voice connection between first and second voice terminals in a switched telephone network
US6985478B2 (en) 1998-02-17 2006-01-10 Genesys Telecommunications Laboratories, Inc. Using XML expressed primitives for platform and system-independent call modeling
US7907598B2 (en) 1998-02-17 2011-03-15 Genesys Telecommunication Laboratories, Inc. Method for implementing and executing communication center routing strategies represented in extensible markup language
US6381321B1 (en) 1998-05-04 2002-04-30 T-Netix, Inc. Telecommunication resource allocation system and method
US6324280B2 (en) 1998-05-05 2001-11-27 Lucent Technologies, Inc. Optimum routing of calls over the public switched telephone network and the internet
US6141341A (en) 1998-09-09 2000-10-31 Motorola, Inc. Voice over internet protocol telephone system and method
US6404870B1 (en) 1998-09-14 2002-06-11 Cisco Technology, Inc. Method and apparatus for authorization based phone calls in packet switched networks
US6445682B1 (en) 1998-10-06 2002-09-03 Vertical Networks, Inc. Systems and methods for multiple mode voice and data communications using intelligently bridged TDM and packet buses and methods for performing telephony and data functions using the same
US6621812B1 (en) 1998-11-10 2003-09-16 Cisco Technology, Inc. Method and apparatus for mapping voice activity detection to a scheduled access media
US6249575B1 (en) 1998-12-11 2001-06-19 Securelogix Corporation Telephony security system
US6665380B1 (en) 1999-01-11 2003-12-16 T-Netix, Inc. Inmate messaging system and method
AU3734700A (en) 1999-03-09 2000-09-28 Don Novak Process for screening and tracking users on a telephonic network
US6249570B1 (en) 1999-06-08 2001-06-19 David A. Glowny System and method for recording and storing telephone call information
US7035666B2 (en) 1999-06-09 2006-04-25 Shimon Silberfening Combination cellular telephone, sound storage device, and email communication device
WO2001001366A2 (en) 1999-06-25 2001-01-04 Telemonitor, Inc. Smart remote monitoring system and method
US6496477B1 (en) 1999-07-09 2002-12-17 Texas Instruments Incorporated Processes, articles, and packets for network path diversity in media over packet applications
US6529500B1 (en) 1999-08-26 2003-03-04 Verizon Laboratories Inc. Unified messaging notification
US6795444B1 (en) 1999-10-26 2004-09-21 Telefonaktiebolaget L M Ericsson (Publ) System and method for providing wireless telephony over a packet-switched network
US6363065B1 (en) 1999-11-10 2002-03-26 Quintum Technologies, Inc. okApparatus for a voice over IP (voIP) telephony gateway and methods for use therein
US6320946B1 (en) 1999-12-23 2001-11-20 Bellsouth Intellectual Property Corporation Information payphone
US6633635B2 (en) 1999-12-30 2003-10-14 At&T Corp. Multiple call waiting in a packetized communication system
US6816469B1 (en) 1999-12-30 2004-11-09 At&T Corp. IP conference call waiting
US6687360B2 (en) 1999-12-30 2004-02-03 At&T Corp. Personal IP follow-me service
US6731630B1 (en) 2000-02-29 2004-05-04 3Com Corporation Flexible dial plan for a data network telephony system
KR20010107017A (en) 2000-05-24 2001-12-07 윤종용 Method and system for radio data communication in communication system
US6654722B1 (en) 2000-06-19 2003-11-25 International Business Machines Corporation Voice over IP protocol based speech system
US7360090B1 (en) 2000-06-30 2008-04-15 Verizon Services Corp. Method of and apparatus for authenticating control messages in a signaling network
US7286521B1 (en) 2000-07-21 2007-10-23 Tellme Networks, Inc. Localized voice over internet protocol communication
JP2002157327A (en) 2000-11-22 2002-05-31 Kobayashi Kirokushi Co Ltd System for claiming cooperative issue of waste disposal ticket
US7203186B1 (en) 2000-11-27 2007-04-10 Fuller William H System and device for integrating IP and analog telephone systems
US6788775B1 (en) 2000-12-11 2004-09-07 Bellsouth Intellectual Property Corporation System and method for passcode validation during telephone call processing
AU2002241225A1 (en) 2001-03-20 2002-10-03 T.D. Soft Communications Ltd. Method and system for communicating voice over ip access networks
US20020141386A1 (en) 2001-03-29 2002-10-03 Minert Brian D. System, apparatus and method for voice over internet protocol telephone calling using enhanced signaling packets and localized time slot interchanging
US6876647B2 (en) 2001-04-12 2005-04-05 International Business Machines Corporation Dynamic priority adjustment in a real time streaming engine
US7075922B2 (en) 2001-04-30 2006-07-11 Level 3 Communications, Inc. Screening inbound calls in a packet-based communications network
US6480590B1 (en) 2001-05-23 2002-11-12 Li-Ta Ku Network access pay telephone, conversion, and method
US7051099B2 (en) 2001-05-31 2006-05-23 Level 3 Communications, Inc. ISDN disconnect alarm generation tool for use in voice over IP (VoIP) networks
US20030002639A1 (en) 2001-07-02 2003-01-02 Huie David L. Real-time call validation system
US7505406B1 (en) 2001-07-13 2009-03-17 Evercom Systems, Inc. Public telephone control with voice over internet protocol transmission
US7142230B2 (en) * 2001-08-22 2006-11-28 Digeo, Inc. System and method for screening incoming and outgoing video communications within an interactive television system
KR20030028617A (en) 2001-09-20 2003-04-10 권황섭 Apparatus for public telecommunication terminal having PSTN and VoIP and Method for controlled thereof
US7085359B2 (en) 2001-12-24 2006-08-01 Mci, Llc Investigation and reporting of inmate security threats
US7039171B2 (en) 2001-12-24 2006-05-02 Mci, Llc Method and system for call tracking to discover inmate-employee fraternization
US20030185204A1 (en) 2002-04-01 2003-10-02 Murdock Scott D. Data communication system combining pay telephone and wireless access technologies
US7494061B2 (en) 2006-06-30 2009-02-24 Evercom Systems, Inc. Systems and methods for identity verification using continuous biometric monitoring
US7916845B2 (en) 2006-04-13 2011-03-29 Securus Technologies, Inc. Unauthorized call activity detection and prevention systems and methods for a Voice over Internet Protocol environment
US7333798B2 (en) 2002-08-08 2008-02-19 Value Added Communications, Inc. Telecommunication call management and monitoring system
US7180997B2 (en) 2002-09-06 2007-02-20 Cisco Technology, Inc. Method and system for improving the intelligibility of a moderator during a multiparty communication session
US7961858B2 (en) 2003-02-07 2011-06-14 Securus Technologies, Inc. Systems and methods for account establishment and transaction management
US7042992B1 (en) 2003-02-07 2006-05-09 Evercom Systems, Inc. Systems and methods for account establishment and transaction management using interrupt messaging
US20040181433A1 (en) * 2003-03-11 2004-09-16 Blair David J. Patient compliance and follow-up techniques
US7046782B2 (en) 2003-04-18 2006-05-16 Larry Miller Telephone call control system and methods
US7103772B2 (en) 2003-05-02 2006-09-05 Giritech A/S Pervasive, user-centric network security enabled by dynamic datagram switch and an on-demand authentication and encryption scheme through mobile intelligent data carriers
US7529357B1 (en) * 2003-08-15 2009-05-05 Evercom Systems, Inc. Inmate management and call processing systems and methods
US7092492B2 (en) * 2003-11-24 2006-08-15 Regents Of The University Of Michigan Universal radiologic patient positioning marker
US7302053B2 (en) 2003-12-01 2007-11-27 International Business Machines Corporation System and method for providing a communication session
US20060286962A1 (en) 2005-01-19 2006-12-21 Evercom Systems, Inc. System and method for providing communication services and intervening when necessary to provide service
US7505409B2 (en) * 2005-01-28 2009-03-17 International Business Machines Corporation Data mapping device, method, and article of manufacture for adjusting a transmission rate of ISC words
US7783021B2 (en) 2005-01-28 2010-08-24 Value-Added Communications, Inc. Digital telecommunications call management and monitoring system
US9300790B2 (en) 2005-06-24 2016-03-29 Securus Technologies, Inc. Multi-party conversation analyzer and logger
US7643472B2 (en) 2005-10-19 2010-01-05 At&T Intellectual Property I, Lp Methods and apparatus for authorizing and allocating outdial communication services

Also Published As

Publication number Publication date
EP1845698A1 (en) 2007-10-17
CA2864329C (en) 2015-06-16
CA2584302A1 (en) 2007-10-13
CA2864316A1 (en) 2007-10-13
IL182515A0 (en) 2007-09-20
US7916845B2 (en) 2011-03-29
CA2864326A1 (en) 2007-10-13
CA2864316C (en) 2015-06-09
CA2584302C (en) 2015-03-17
CA2864326C (en) 2015-06-09
AU2007201590A1 (en) 2007-11-01
US20070242658A1 (en) 2007-10-18
US20110110367A1 (en) 2011-05-12
CA2864328C (en) 2016-01-12
CA2864329A1 (en) 2007-10-13
CA2864267A1 (en) 2007-10-13

Similar Documents

Publication Publication Date Title
CA2864328C (en) Inmate management and call processing systems and methods
US11778091B2 (en) Utilizing sip messages to determine the status of a remote terminal in VOIP communication systems
US10178224B2 (en) Systems and methods for detecting a call anomaly using biometric identification
US8755500B2 (en) Biometric identification in communication
US8064580B1 (en) Telephony system and method with improved fraud control
US8515021B2 (en) System and method for providing personalized reverse 911 service
US7079637B1 (en) System and method for detecting unauthorized call activity
US6141406A (en) Method and apparatus for detecting a secondary destination of a telephone call based on changes in the telephone signal path
US20130044867A1 (en) Use of voice biometric software to analyze inmate telephone calls
AU2008316243B2 (en) Ringback tone monitoring apparatus and method
US20070206761A1 (en) Comparative tone return time three-way call detect

Legal Events

Date Code Title Description
EEER Examination request

Effective date: 20140919

MKLA Lapsed

Effective date: 20190410