ATM transmission system

Details ATM transmission system ATM transmission system

1995-11-21

1997-08-05

Ton, Dang

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

370474, H04L 1256

Patent

active

056549644

ABSTRACT:
An LD-CELP coder 211 codes an input signal supplied through a telephone line based on the low-delay code-excited linear prediction. A speech detector 212 detects voice
o-voice of the input signal. A FAX terminal input detector 213 detects a FAX signal. A multiplexer 214 multiplexes the coded data and the voice
o-voice data through bit steal of one bit per frame from the code. In a CLAD (cell assembling and disassembling) unit 300, a speech data frame is detected, and also the voice
o-voice information that has been multiplexed in the coded data is detected. If the voice
o-voice information indicates voice, the coded data is converted to cell data to be sent out to a transmission line. Concurrently with the operation of the coder, FAX terminal input data is all converted to cell data and sent out to the transmission line independently of the voice
o-voice information.

REFERENCES:
patent: 5408469 (1995-04-01), Opher et al.

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