H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 12/56 (2006.01) H04B 10/20 (2006.01) H04L 12/64 (2006.01) H04M 7/00 (2006.01) H04Q 11/04 (2006.01) H04M 3/00 (2006.01)
Patent
CA 2214128
A voice adaptation device (18) provides an interface between a narrowband local access network and a broadband asynchronous transfer mode (ATM) backbone network (16). The voice adaptation device (18) includes a T1/E1 network adaptor (50) that converts T1/E1 signals carrying narrowband voice traffic into an ATM cell format. The T1/E1 network adaptor (50) also performs echo cancelling, voice enhancement, digital voice protocol conversion, and compression/decompression on the narrowband voice traffic. The voice adaptation device (18) also includes a synchronous optical network formatter (52) that places ATM cells generated by the T1/E1 network adaptor (50) into synchronous optical network signals. The synchronous optical network signals are transmitted across the broadband ATM backbone network (16).
Dispositif d'adaptation vocale (18) assurant une interface entre un réseau d'accès local à bande étroite et un réseau de base (16) à mode de transfert asynchrone (MTA) à large bande. Ledit dispositif d'adaptation (18) inclut un adaptateur de réseau (50) T1/E1 qui convertit des signaux T1/E1 acheminant un trafic vocal à bande étroite en un format de cellule ATM. L'adaptateur de réseau (50) T1/E1 réalise également la compensation d'écho, l'amélioration du signal vocal, la conversion de protocole d'appel téléphonique numérique ainsi que la compression/décompression sur le trafic vocal à bande étroite. Le dispositif d'adaptation vocale (18) comporte également un programme de mise en forme (52) de réseau optique synchrone qui place les cellules ATM générées par l'adaptateur de réseau (50) T1/E1 dans des signaux de réseau optique synchrone. Lesdits signaux sont transmis par le réseau de base MTA à bande étroite (16).
Alcatel Usa Inc.
Dsc Communications Corporation
Kirby Eades Gale Baker
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