[54] ASYNCHRONOUS TRANSFER MODE INTEGRATED ACCESS SERVICE
[75] Inventors: Richard Courtney Eakins,
Bridgewater; Cheryl F. Newman, Red
Bank; Ronald W. Toth, Milford; Fang
Wu, North Middletown, all of N.J.
[73] Assignee: AT&T Corp, Middletown, N.J.
[21] Appl. No.: 08/752,126 [22] Filed: Nov. 20, 1996
[51] Int. CI.6 H04J 3/16; H04L 12/28
[52] U.S. CI 370/468; 370/395
[58] Field of Search 370/468, 471,
370/395, 444, 260, 360, 397, 399
[56] References Cited
U.S. PATENT DOCUMENTS
4,924,458 5/1990 Obara 370/360
5,526,350 6/1996 Gittins 370/468
5,583,863 12/1996 Darr 370/397
5,682,386 10/1997 Arimilli 370/468
5,689,553 11/1997 Ahuja 370/260
5,742,601 4/1998 Riedel 370/395
5,757,801 5/1998 Arimilli 370/444
5,802,283 9/1998 Grady 379/399
Primary Examiner—Ajit Patel
Assistant Examiner—Ricardo M. Pizarro
Attorney, Agent, or Firm—Robert B. Levy; Stuart H. Mayer
[57] ABSTRACT
A communications system is provided which supports asynchronous transfer mode (ATM) communications. An ATM multiplexer is located at a customer's premises and connected to customer premises voice and data equipment. A central office ATM multiplexer is connected to various different networks in the existing network infrastructure. The central office ATM multiplexer is preferably connected to networks such as a low-speed packet-switched network, a public circuit-switched network, a private line network, and a high-speed packet-switched network. The ATM multiplexer located at the customer premises preferably supports dynamic bandwidth allocation. Additional features provided by the communications system include the ability to provide different voice encoding schemes for different users based on calling party or called party information.
21 Claims, 4 Drawing Sheets
