WO2004112316A1

WO2004112316A1 - An adaptor and the method, system and telephone implemented with it

Info

Publication number: WO2004112316A1
Application number: PCT/CN2004/000622
Authority: WO
Inventors: Yunhong Zhou
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2003-06-14
Filing date: 2004-06-10
Publication date: 2004-12-23
Also published as: CN100388743C; HK1072847A1; CN1567922A

Abstract

This invention discloses an adaptor and the method, system and telephone implemented with it, the adaptor includes: a PSTN interface connected with the PSTN network, a PSTN processing module, a telephone unit, a main processor module and a PC interface connected with a PC which has the video software. The communicating method comprises the step of: connecting the PC which has the video software with the local telephone by the adaptor, connecting the local telephone with PSTN network by the adaptor; the local telephone calling the remote terminals received from the IP network by the PSTN network or PC or receiving the call from the remote terminals of the IP network received by the PSTN network or PC by using the adaptor; after calling, communicating with the remote terminals. This invention easily resolves the problem of the video terminal dialing and voice acquisition/playing and the compatibility with ordinary telephone service.

Description

Adapter and communication method, system and telephone set realized by using same

Technical field

The present invention relates to broadband multimedia communication technology, and in particular, to an adapter and a communication method, system, and telephone using actual communication. Invention-Back-Scenery With the rapid development of broadband technology, multimedia communications based on video and audio applications that could not be achieved on narrow bands have been rapidly developed and widely used on broadband.

In the prior art, according to different standard systems, multimedia communication systems on broadband can be divided into two types, namely: based on the conference television standard H.323 protocol and SIP (Session Initiation Protocol: Session Initiation Protocol) Protocol-based two standard video communications systems. Among them, the conference television standard H.323 protocol is based on video and audio applications formulated by the International Telecommunication Union. In the video communication system, user-side video devices are usually called video terminals. Video terminals can be divided into soft terminals and hard terminals. Among them, soft terminals are generally based on PCs, and PCs are used to encode and decode video and audio. The hard terminal is generally a separate hardware device, and the image and voice codecs are based on its own dedicated video and audio codec chip.

Several video terminals commonly used in the prior art are described below.

The first type: video soft terminal. The PC running the video software cooperates with the external camera of the PC, the sound card on the PC, and the voice capture / playback device to complete the video and audio communication function, forming a video soft terminal. The composition is shown in FIG. 1 and includes: a PC installed with image and voice processing software and connected to an IP network, a camera connected to the PC and a voice acquisition / playback device connected to the PC. When running, first the camera captures the local image, and the voice capture / playback device collects the local sound; then the PC processes the collected image and sound and sends the collected local image and sound outward through the IP network; at the same time, it receives the remote image of Image and sound, display image through PC screen, play sound through voice capture / playback device.

However, the video soft terminal has the following disadvantages:

1. Because the sound is transmitted through a proprietary voice sending / receiving device, the keyboard or mouse of the PC must be used when dialing or calling, and the interface of the terminal software must also be operated. The sending / receiving device can only hear it, so this method does not meet the traditional telephone usage habits of people, and it is very inconvenient to use.

2. Since the local phone cannot be connected to the IP network, the video soft terminal cannot use the dial-up and voice capture / play functions of the local phone to conveniently dial-up on the IP network, resulting in the local phone and the video soft terminal Features are not compatible with each other.

3. It can only be used for IP communication, but not for PSTN network communication at the same time. It is not compatible with ordinary PSTN telephone service functions.

The second type: Video hard terminal, through a proprietary chip for processing images and voice and a camera, can be directly connected to the IP network to achieve multimedia communications, the specific communication system composition shown in Figure 2, including: A video hard terminal, where the video hard terminal generally includes: a main processor, a display screen, an operation keyboard, a camera, and a microphone. During operation, the camera first collects local images; the microphone collects local sounds and plays sounds; then the IP network is used for communication such as calls and calls.

However, the above video hard terminal has the following disadvantages:

1. It can only be used for IP communication, not for PSTN network communication at the same time, and cannot be compatible with ordinary PSTN telephone services.

2. As the local phone cannot be connected to the IP network, the video hard terminal cannot use the dial-up and voice capture / play functions of the local phone to conveniently dial-up on the IP network. Features are not compatible with each other.

The third type: an integrated video terminal, which uses a combination of software and hardware, and also needs to be combined with a PC to complete multimedia communications. Among them, the software completes the decoding of images and voice Encoding and decoding; hardware completes image collection and image encoding. The specific communication system composition is shown in Figure 3. It includes: a PC with image decoding and voice encoding and decoding software connected to the IP network, and a camera terminal connected to the PC. And a voice acquisition / playback device connected to the PC, wherein the camera terminal includes a camera and a video encoder. When running, first the video encoder completes the local image acquisition and local image encoding functions; the voice capture / playback device performs local sound collection; then the PC encodes the collected voice and sends the encoded local image and sound outward through the IP network ; Receive the image and sound from the far end at the same time and decode it by the PC, then display the far end image through the PC screen, and play the sound through the voice capture / playback device.

However, the above integrated video terminal has the following disadvantages:

2. Since the local phone cannot be connected to the IP network, the integrated video terminal cannot use the dial-up and voice collection / play functions of the local phone to conveniently implement dial-up on the IP network, resulting in the local phone and videoconferencing. Soft terminal functions are not compatible with each other.

3. As the sound transmission is through a dedicated voice sending / receiving device, when dialing or calling, the keyboard or mouse of the PC must be used, and the interface of the terminal software must be operated. The incoming call ringtone and ringback tone also need to be sent through the dedicated voice. / Receiving equipment can only hear, so this method does not meet people's traditional telephone usage habits, it is very inconvenient to use. Summary of the Invention

The invention provides an adapter, a communication method and a system realized by using the adapter, so as to realize video terminal dial-up and voice collection / playback conveniently, and is compatible with ordinary PSTN telephone services.

Another object of the present invention is to provide a telephone set using an adapter to achieve mutual compatibility between the functions of the local telephone set and the video terminal.

The invention is realized by the following technical solutions:

An adapter, comprising: a PSTN interface connected to a PSTN network, PSTN processing module, telephone unit, main processor module and PC interface connected with PC with video software, among them,

The PSTN processing module processes the PSTN call signal received by the PSTN interface, and sends the processed signal to the telephone unit through the PSTN interface; together with the main processor module, controls the PSTN voice signal received by the PSTN interface to the telephone unit, and controls the The PSTN signal of the telephone unit is output to the PSTN network through the PSTN interface;

The main processor module converts the PSTN signal from the phone unit into an IP signal recognizable by the PC, and sends the converted signal to the PC through the PC interface; converts the IP signal from the PC interface into the PSTN signal, and The converted signal is sent to the telephone unit.

An adapter includes: a PSTN interface connected to a network, a PSTN processing module, a main processor module, and a terminal interface connected to a video hard terminal, where:

The PSTN processing module processes the PSTN call signal received by the PSTN interface and sends the processed signal to the main processor module; transparently transmits the PSTN voice signal received by the PSTN interface to the main processor module; The signal is transparently transmitted to the PSTN network through the PSTN interface;

The main processor module converts the PSTN signal from the PSTN processing module into an IP signal recognizable by the video hard terminal, and sends the converted signal to the video hard terminal through the terminal interface; converts the IP signal from the terminal interface into the PSTN signal, Send to PSTN processing module.

A video terminal includes a main processor module, a camera module, an operation keyboard, a microphone, and a display screen. The camera module, the operation keyboard, a microphone, and a display screen are respectively connected to the main processor module. The video terminal further includes A PSTN interface connected to a PSTN network, and a PSTN processing module, where:

The PSTN processing module processes the PSTN call signal received by the PSTN interface, and sends the processed signal to the main processor module; transparently transmits the PSTN voice signal received by the PSTN interface to the main processor module; Module signals pass PSTN The interface is transparently transmitted to the PSTN network;

The main processor module converts the PSTN signal from the PSTN processing module into an IP signal recognizable by the video hard terminal, and sends the converted signal to the microphone; and sends the PSTN signal from the operation keyboard to the processing module.

A telephone includes a telephone module with a telephone function and a PSTN interface connected to a PSTN network. The telephone also includes a main processor module, a PSTN processing module, and a PC interface connected to a PC. Among them,

The PSTN processing module processes the PSTN call signal received by the PSTN interface, and sends the processed signal to the phone module through the PSTN interface; together with the main processor module, controls the PSTN voice signal received by the PST interface to the phone module and controls the The PSTN signal of the phone module is output to the PSTN network through the PSTN interface;

The main processor module converts the PSTN signal from the phone unit into an IP signal recognizable by the PC, and sends the converted signal to the PC through the PC interface; converts the IP signal from the PC interface into the PSTN signal, and The converted signal is sent to the phone module.

A communication method applied to video communication includes the following steps: a PC with video software is connected to a local phone through an adapter, and a local phone is connected to a PSTN network through an adapter; the local phone is connected to the PSTN network through an adapter; Make a call from a remote terminal in the IP network received by the PSTN network or a PC, or receive a call from a remote terminal in the IP network received by the PSTN network or a PC; after the call is successful, pass through the remote terminal Adapter communication.

A communication method applied to video communication includes the following steps:

The video hard terminal is connected to the PSTN network through an adapter; the video hard terminal makes a call to a remote terminal in the IP network or the PSTN network through the adapter, or receives a call from a remote terminal in the IP network or the PSTN network; after the call is successful To communicate with the remote terminal through an adapter. A communication system includes a PSTN network, an IP network, a local phone, and a video terminal connected to the IP network, and is characterized in that the system further includes an adapter, which is respectively connected to the PSTN network, the local phone, and the video terminal. After adopting the above technical solution, the present invention has the following advantages:

1. Due to the application of the adapter, the local phone is connected to the IP network through the PC; on the other hand, the local phone can be connected to the PSTN network, which in turn enables the communication terminal on the IP network to be unplugged or the IP network to be answered. When a call comes in, it can be easily implemented directly on the local phone.

2. Due to the application of the adapter, it can be compatible with both the PSTN Internet phone and the IP network multimedia terminal, so that the traditional phone and the IP multimedia terminal can be organically combined to communicate with each other without affecting the functions of the traditional phone.

3. Since communication is implemented using a traditional telephone, it conforms to the traditional telephone usage habits and makes it more convenient for users. Brief Description of the Drawings Fig. 1 is a communication system diagram of a video soft terminal in the prior art;

2 is a communication system diagram of a video hard terminal in the prior art;

3 is a communication system diagram of an integrated videoconferencing terminal in the prior art;

4 is a flowchart of a communication method according to the present invention;

5 is a structural diagram of a first embodiment of a communication system according to the present invention;

6 is a block diagram of a first embodiment of an adapter in a communication system of the present invention;

7 is a flowchart of an IP videophone being actively pulled out by a telephone set during operation of the present invention;

FIG. 8 is a flowchart of transmitting / receiving a voice signal during operation of the present invention;

FIG. 9 is a flowchart of IP call processing during operation of the present invention;

FIG. 10 is a flowchart of unplugging a PSTN network phone during operation of the present invention;

11 is a flowchart of transmitting / receiving a voice signal of a PSTN network when the present invention is running; FIG. 12 is a flowchart of processing an incoming call of a PSTN network when the present invention is running; FIG. 13 is a structural diagram of a second embodiment of a communication system of the present invention;

14 is a block diagram of a second embodiment of an adapter in a communication system of the present invention;

15 is a structural diagram of a third embodiment of a communication system according to the present invention;

16 is a block diagram of a third embodiment of an adapter in a communication system of the present invention;

17 is a structural diagram of a fourth embodiment of a communication system according to the present invention;

18 is a block diagram of a fourth embodiment of an adapter in a communication system of the present invention;

FIG. 19 shows the structure of a fifth embodiment of the communication system of the present invention;

20 is a block diagram of a fifth embodiment of an adapter in a communication system of the present invention;

21 is a structural diagram of a sixth embodiment of a communication system according to the present invention;

22 is a block diagram of a sixth embodiment of an adapter in a communication system of the present invention;

23 is a structural diagram of a seventh embodiment of a communication system of the present invention;

24 is a block diagram of a seventh embodiment of a video hard terminal in a communication system of the present invention; FIG. 25 is a structural diagram of an eighth embodiment of a communication system of the present invention;

FIG. 26 is a block diagram of an eighth embodiment of a video hard terminal in a communication system of the present invention. Mode of Carrying Out the Invention

The present invention is described in detail below with reference to the drawings.

The implementation principle of the present invention is as follows: Since the video terminal in the prior art cannot satisfy the dial-up and the convenience of voice collection / playback at the same time, further restricting the use of the video terminal to a great extent, which brings inconvenience to the user.

The present invention addresses this problem, and in view of the fact that a local telephone set connected to a PSTN (Public Switch Telephone Network) network is generally arranged next to a computer in an office or at home, and an adapter is provided. On the one hand, the local phone can be connected to the IP network through the PC; on the other hand, the local phone can be connected to the PSTN network, thereby making the communication terminal on the IP network unplugged or answering the IP network. When you make an incoming call, you can easily implement it directly on the local phone.

The adapter provides a PSTN interface for connecting to a PSTN network, and an interface for connecting to an IP network. When the video terminal used is a video soft terminal, the interface connected to the IP network is a PC interface; when the video terminal used is a video hard terminal, the interface connected to the IP network is a video hard terminal interface. During operation, since the local phone can be connected to the video terminal through an adapter, and the video terminal is connected to the IP network, it can overcome the problems that the video terminal cannot meet the dial-up and convenient voice collection / playback in the prior art; and the local phone The machine is connected to the PSTN network through an adapter, which realizes compatibility between the video terminal and the PSTN network phone.

Please refer to FIG. 4. FIG. 4 is a flowchart of a communication method for a video soft terminal according to the present invention. The method uses an adapter to enable a user to communicate with a communication terminal in an IP network and a remote terminal in a PSTN network through a local phone. End phone for communication, which includes the following steps:

A. Connect the local phone to the video terminal through the adapter, and then to the IP network;

B. Connect the local phone to the PSTN network through the PSTN interface of the adapter;

C. The local phone makes a call to a remote terminal in the IP network or the PSTN network through an adapter, or receives a call from a remote terminal in the IP network or the PSTN network;

D. After the call is successful, the local phone communicates with the remote terminal in the IP network or PSTN network through the adapter.

For a video hard terminal, since it has both the functions of direct dialing and answering an incoming call, the above communication process includes the following steps:

A. Connect the video hard terminal to the PSTN network through an adapter;

B. The video hard terminal makes a call to a remote terminal in the IP network or the PSTN network through an adapter, or receives a call from a remote terminal in the IP network or the PSTN network;

C. After the call is successful, communicate with the remote terminal through the adapter.

The communication system of the first embodiment to the sixth embodiment is formed by combining an adapter, a local telephone and a video terminal. These are described separately below. Embodiment one:

Referring to FIG. 5, FIG. 5 is a schematic diagram of a first embodiment of a communication system according to the present invention, which includes a PC 20, an IP network 30, a PSTN network 40, an adapter 60, a camera 101, and a telephone 401 installed with video software 10. The phone 401 is the local phone in the above method; the PC 20 is connected to the IP network 30, the adapter 60 and the camera 101, respectively; the adapter 60 is also connected to the PSTN network 40 and the phone 401. It can be seen that the adaptor 60 and the PC 20 enable the phone 401 to be connected to both the PSTN network 40 and the IP network 30, so that the user can only use the phone 401 and not the PC, microphone, headset, etc. To communicate with a communication terminal in the IP network 30, the telephone 401 can also perform conventional communication with other telephones in the PSTN network 40 through the adapter 60.

Referring to FIG. 6, the adapter 60 further includes:

A PSTN interface 603 is used to implement the connection between the telephone 401 and the PSTN network 40; a PSTN processing module 602 is used to process a call signal from the PSTN network 40; a telephone interface 604 is used to implement the connection between the telephone 401 and the adapter 60; A main processor module 601, configured to control the entire communication system and complete signal conversion and protocol processing;

The PC interface 605 is configured to implement the connection between the adapter 60 and the PC 20, and further implement the connection of the telephone 401 and the IP network 30 through the PC 20.

Referring to FIG. 7, a flowchart of a telephone set actively dialing an IP video phone during operation of the present invention is as follows: First, the telephone set 401 dials out and sends a dialing signal, which is controlled by the main processor module and the PSTN processing module. The number signal is transmitted to the main processor module 601 via the telephone interface 604 of the adapter 60; then the main processor module 601 processes the received dial-up signal, which includes first converting the dial signal into a digital signal, and then converting the digital signal according to the protocol Is a call signal that can be recognized by the IP network 30; then the main processor module 601 sends the call signal to the video software 10 in the PC 20 through the PC interface 605; finally, the video software 10 is used to call a remote terminal in the IP network 30 (FIG. (Not shown), which in turn allows users to pass The telephone 401 can call a remote terminal (not shown) in the IP network 30.

Please refer to FIG. 8, which is a flowchart of transmitting / receiving a voice signal during operation of the present invention. The voice transmission process is as follows: First, under the control of the main processor module, a second voice signal from the telephone set 401 is transmitted to the host via the telephone interface 604. A processor module 601; and then the main processor module 601 processes the second voice signal, which includes first converting a voice analog signal into a digital signal, and then converting the digital signal into a signal recognizable by the IP network 30 according to a protocol; and then through a PC The interface 605 sends the second output signal to the video software 10 in the PC 20; the video software 10 then sends the video signal to the remote terminal (not shown) through the IP network 30.

The voice receiving process is as follows: First, a first voice signal from a remote terminal (not shown) of the IP network 30 is sent to the video software 10 in the PC 20 through the IP network 30; then the video software 10 sends the first A voice signal is sent to the main processor module 601; then the main processor module 601 processes the first voice signal, including converting the IP voice signal into a voice digital signal according to a protocol, and then converting the digital signal into an analog signal; The telephone interface 604 sends the first output signal to the telephone 401, and the user can hear the sound through the telephone 401.

Please refer to FIG. 9, which is a flowchart of processing an IP call during operation of the present invention. The specific process is as follows: First, a call signal from a remote terminal of the IP network 30 (not shown) is sent to the video software in the PC 20 via the IP network 30. 10; then the video software 10 sends the call signal to the main processor module 601 through the PC interface 605; then the main processor module processes the received call signal, including converting the IP call signal into a voice digital signal according to the protocol, and then The digital signal is converted into an analog signal; and is sent to the telephone 401 through the telephone interface 604, and then the call is completed, and a communication relationship is established between the remote terminal (not shown) of the IP network 30 and the telephone 401. As for the subsequent call process, please refer to Figure 8.

Since the PSTN processing module 602 and the main processor module 601 in the adapter 60 can control the signaling of the telephone interface 604 to be sent to the PSTN network 40 through the PSTN interface 603, the telephone 401 and the PST can be enabled in the communication system provided by the present invention Remote power in network 40 The phone (not shown) communicates. Please refer to FIG. 10 for the specific process. First, the telephone 401 generates a dial-up signal; the adapter 60 receives the dial-up signal through the telephone interface 604; the PSTN processing module 602 and the main processor module 601 control The dial-up signal is sent from the telephone interface 604 to the PSTN interface 603; the dial-up signal is sent to a remote telephone set (not shown) on the PSTN network 40 through the PSTN interface 603, thereby establishing a communication relationship.

After the above communication relationship is established, voice transmission is performed. For a specific process, please refer to FIG. 11. FIG. 11 is a flowchart of sending / receiving a voice signal of a PSTN network during operation of the present invention. The voice sending process is as follows: First, a voice signal from a telephone 401 Send to the telephone interface 604 in the adapter 60; then the main processor module 601 and the PSTN processing module 602 control the voice signal to the PSTN interface 603; then send the voice signal to the remote telephone set of the PSTN network 40 through the PSTN interface 603 ( (Not shown), and then the voice transmission is completed.

The voice receiving process is: first the voice signal of the remote telephone (not shown) is sent to the PSTN interface 603 in the adapter 60; then the main processor module 601 and the PSTN processing module 602 control the voice signal to the telephone interface 604; Then, the voice signal is sent to the phone 401 through the phone interface 604, and then the voice is received.

Please refer to FIG. 12. FIG. 12 is a flowchart of a PSTN network call processing during operation of the present invention. The specific process is as follows. First, a PSTN interface 603 in the adapter 60 receives a call signal from a remote phone (not shown) in the PSTN network 40. Then the PSTN processing module 602 processes the received call signal, including: extracting the call signal and performing signal processing; sending the processed call signal through the PSTN interface 603 to the telephone interface 604; and then processing the call through the telephone interface 604 The signal is sent to the telephone 401, and a communication relationship is established between the two telephones. As for the subsequent call process, please refer to Figure 11.

It can be seen that the adapter on the one hand enables the local phone to connect to the IP network through a PC and communicate with remote terminals on the IP network; on the other hand, it enables the local phone to connect to the PSTN network and communicate with the PSTN network. The remote phone communicates, so that when dialing a call to a communication terminal on the IP network or receiving an incoming call on the IP network directly, It can be easily implemented on the local telephone.

Embodiment two:

In the second embodiment, the composition diagram of the communication system provided by the present invention is shown in FIG. 13. Compared with the composition diagram of the communication system shown in FIG. 5 of the first embodiment, the difference is that the camera 101 is not directly connected to the PC 20, but instead Connect to adapter 61 first.

Because the connection relationship of the camera 101 is changed, the structure of the adapter 61 in the second embodiment is correspondingly changed. For details, please refer to FIG. 14. Compared with the adapter in the first embodiment and FIG. 6, the difference is that a camera interface 616 is added. In addition to being connected to the camera 101, the camera interface 616 is also connected to the PC interface 605 and the main processor module 601 of the adapter 61, respectively.

Example three:

In the third embodiment, the composition diagram of the communication system provided by the present invention is shown in FIG. 15. Compared with the composition diagram of the communication system shown in FIG. 5 of the first embodiment, the difference is that the camera is built in the adapter 62.

Please refer to FIG. 16. Compared with the adapter 60 in the first embodiment, the adapter 62 described above has an additional camera module 626. The camera module 626 is respectively connected to the PC interface 605 and the main processor module 601.

Embodiment 4:

In the fourth embodiment, the composition diagram of the communication system provided by the present invention is shown in FIG. 17. Compared with the composition diagram of the communication system shown in FIG. 5 of the first embodiment, the difference is that the adapter function is combined with the phone function. In the first embodiment, the telephone is built in the adapter to form a new adapter 63.

Correspondingly, please refer to FIG. 18, the location of the telephone interface in the adapter 60 in the first embodiment is the phone module 634 in the adapter 63, which is directly connected to the PST network 40 externally. The phone module 634 provides functions such as dialing, outputting ringing, receiving and sending voice signals, and so on.

Embodiment 5: In Embodiment 5, the composition diagram of the communication system provided by the present invention is shown in FIG. 19, and compared with the composition diagram of the communication system shown in FIG. 17 of Embodiment 4, the difference is that the camera 101 is not directly connected to the PC 20, and It is connected to the adapter 64.

Since the connection relationship of the camera 101 is changed, the structure of the adapter 64 in the fifth embodiment is correspondingly changed. For details, please refer to FIG. 20. Compared with the adapter in FIG. 18 in the fourth embodiment, the difference is that a camera interface 646 is added. In addition to being connected to the camera 101, the camera interface 646 is also connected to the PC interface 605 and the main processor module 601 in the adapter 64, respectively.

Embodiment 6:

In the sixth embodiment, the composition diagram of the communication system provided by the present invention is shown in FIG. 21. It can be seen that the telephone and the camera in the first embodiment are integrated into the adapter to form a new adapter 65. Similarly, the adapter can also be integrated into a telephone.

Please refer to FIG. 22 for the specific composition of the adapter 65. The camera module 656 is connected to the PC interface 605 and the main processor module 601, respectively.

In addition, according to the actual application situation and the form of the video terminal, such as a video hard terminal and an integrated video terminal, the communication system and adapter of the present invention have the following implementations.

Embodiment 7:

In the seventh embodiment, the composition diagram of the communication system provided by the present invention is shown in FIG. 23. Since the video hard terminal 11 with functions of camera, sound transmission / reception, and dialing is used in this embodiment, compared with In the first embodiment, there is no PC 20, camera 101, voice transmitting / receiving device 50, and telephone 401. In the seventh embodiment, the video hard terminal 11 is directly connected to the IP network 30 while being connected to the PSTN network 40 through a connection adapter 66.

Please refer to FIG. 24, which is a block diagram of a seventh embodiment of an adapter in a communication system of the present invention. Since the adapter 66 is connected to the video hard terminal 11, the adapter 66 has no telephone interface and PC interface compared to the adapter 60 in the first embodiment. It includes: a PSTN interface 603, a PSTN processing module 602, a main processor module 601, and a terminal interface 665, through which the adapter 66 video hard terminal 11 can be connected together. The PSTN call signal from the PSTN interface 603 is processed by the PSTN processing module 602 and sent to the main processor module 601. The main processor module first converts the analog signal into a digital signal, and then converts it into a signal that can be recognized by the video hard terminal according to the protocol. Output to the video hard terminal through the terminal interface 665.

The voice signal from the PSTN interface 603 is transparently transmitted to the main processor module through the PSTN processing module. The main processor module first converts the analog signal into a digital signal, and then converts it into a signal that can be recognized by the video hard terminal according to the protocol, and outputs it through the terminal interface 665 To the video hard terminal.

The signals from the video hard terminal are output to the main processor module through the terminal interface. The main processor module converts the IP signals into PSTN signals and sends them to the PSTN processing module. The PSTN processing module transparently transmits to the PSTN interface and outputs the PSTN interface to the PSTN network.

Embodiment 8:

In the eighth embodiment, the composition diagram of the communication system provided by the present invention is shown in FIG. 25. Compared with the composition diagram of the communication system shown in FIG. 23 of the seventh embodiment, the difference is that the adapter is built in the video hard terminal to form a new one. Video hard terminal 12.

The module composition diagram of the video hard terminal 12 is shown in FIG. 26. It can be seen that, after the adapter is built in, the new adapter 67 has no PSTN interface and terminal interface compared to the adapter 66 in the seventh embodiment.

Claims

Claim

1. An adapter, comprising: a PSTN interface connected to a network, a PSTN processing module, a telephone unit, a main processor module, and a PC interface connected to a PC equipped with video software, wherein:

The PSTN processing module processes the PSTN call signal received by the PSTN interface, and sends the processed signal to the telephone unit through the PSTN interface; together with the main processor module, controls the PSTN voice signal received by the PSTN interface to the telephone unit, and The PSTN service signal of the telephone unit is output to the PSTN network through the PSTN interface;

The main processor module converts the IP service signal from the phone unit into an IP signal recognizable by the PC, and sends the converted signal to the PC through the PC interface; and converts the IP signal from the PC interface into a PSTN signal, Send the converted signal to the telephone unit.

2. The adapter according to claim 1, wherein the adapter further comprises a camera interface connected to a camera, and the interface is controlled by the main processor module to send an image signal from the camera to the PC through a PC interface. machine.

3. The adapter according to claim 1, wherein the adapter further comprises a camera module, and the module sends the captured image signal to the PC through a PC interface.

4. The adapter according to claim 1, 2 or 3, characterized in that the telephone unit is a telephone interface connected to a telephone.

5. The adapter according to claim 1, 2 or 3, wherein the telephone unit is a telephone module having a telephone function.

6. An adapter, comprising: a PSTN interface connected to a PSTN network, a PSTN processing module, a main processor module, and a terminal interface connected to a video hard terminal, wherein: The PSTN processing module processes the PSTN call signal received by the PSTO interface, and sends the processed signal to the main processor module; transparently transmits the PSTN voice signal received by the interface to the main processor module; and transmits the signal from the main processor module Transparent transmission to PSTN network through PSTN interface;

7. A video terminal, comprising a main processor module, a camera module, an operation keyboard, a microphone, and a display screen, wherein the camera module, the operation keyboard, the microphone, and the display screen are respectively connected to the main processor module, and are characterized in that: The videoconferencing terminal further includes a PSTN interface connected to a PSTN network and a PSTN processing module, where:

The PSTN processing module processes the PSTN call signal received by the PSTN interface, and sends the processed signal to the main processor module; transparently transmits the PSTN voice signal received by the PSTN interface to the main processor module; The signal of the module is transmitted to the PSTN network through the PSTN interface.

The main processor module converts the PSTN signal from the PSTN processing module into an IP signal recognizable by the video hard terminal, and sends the converted signal to the microphone; and sends the PSTN signal from the operation keyboard to the PSTN processing module.

8. A telephone, comprising a telephone module with a telephone function, a PSTN interface connected to a PSTN network, and a PSTN processing module, characterized in that the telephone further includes a main processor module and a PC connected to a PC Interface, where

The PSTN processing module processes the PSTN call signal received by the PSTN interface, and sends the processed signal to the phone module through the PSTN interface; together with the main processor module, controls the PSTN voice signal received by the PSTN interface to the phone module, and controls the The PSTN service signal of the phone module is output to the PSTN network through the PSTN interface; The main processor module converts the IP service signal from the phone unit into an IP signal recognizable by the PC, and sends the converted signal to the PC through the PC interface; and converts the IP signal from the PC interface into a PSTN signal, Send the converted signal to the phone module.

9. The telephone set according to claim 8, wherein the telephone set further comprises a camera interface connected to the camera, and the interface is controlled by the main processor module to send the image signal from the camera to the camera through the PC interface. Describe 'PC.

10. The telephone according to claim 8, wherein the telephone further comprises a camera module, and the module sends the captured image signal to the PC through a PC interface.

11. A communication method, which is applied to video communication, is characterized in that it includes the following steps:

Connect the PC with the video software to the local phone through the adapter, and connect the local phone to the PSTN network through the adapter;

The local phone makes a call to a remote terminal in the IP network received by the PSTN network or PC through an adapter, or receives a call from a remote terminal in the IP network received by the PSTN network or by the PC;

After the call is successful, it communicates with the remote terminal through the adapter.

12. A communication method, which is applied to video communication, is characterized in that it includes the following steps:

Connect the video hard terminal to the PSTN network through an adapter; call, or receive a call from a remote terminal in the IP network or the PSTN network;

13. A communication system including a PSTN network, an IP network, a local telephone, and a video terminal connected to the IP network, characterized in that the system further includes an adapter, The adapter is connected to the PSTN network, local phone and video terminal respectively.

14. The communication system according to claim 13, wherein the video terminal is a PC equipped with video software, or a video hard terminal.

15. The communication system according to claim 13, wherein the system further comprises a camera for collecting images, and the camera is connected to an adapter.

16. The communication system according to claim 15, wherein the camera is built into an adapter.

17. The communication system according to claim 13, wherein the system further comprises a camera for collecting images, and the camera is connected to the PC.

18. The communication system according to claim 13, 15, 16, or 17, wherein the local telephone is integrated in an adapter.

19. The communication system according to claim 13, wherein the adapter is integrated in a local telephone.

20. The communication system according to claim 13, wherein the adapter is integrated in a video terminal.