Voice information service system to be connected to ATM network

Details Voice information service system to be connected to ATM network Voice information service system to be connected to ATM network

1997-02-03

1999-07-06

Hsu, Alpus H.

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

370397, 370428, 370474, 379 8817, 379 8827, H04L 1254, H04J 326

Patent

active

059205598

ABSTRACT:
The present invention relates to a voice information service system to be connected onto an ATM network. An object of the present invention is to solve the problem that the installation cost of a voice information service system increases proportionally to the number of channels and to provide an inexpensive voice information service system. The voice information service system includes a voice buffer for temporarily storing voice information with a given length read from a voice file for storing digitized voice information, and a cell assembler for appending an SAR header and cell header to voice information existent in the voice buffer. A control unit includes a cell control table for storing cell control information associated with a plurality of virtual channels, controls calls by transmitting or receiving control signals onto or from the ATM network via a signal cell assembler dissembler, references areas associated with an available virtual channel in the cell control table upon call termination, produces a voice cell to be placed on the virtual channel at regular intervals using the cell assembler and cell control table, and then transmits the voice cell to a calling side.

REFERENCES:
patent: 5513174 (1996-04-01), Punj
patent: 5526353 (1996-06-01), Henley et al.
patent: 5544169 (1996-08-01), Norizuki et al.
patent: 5654964 (1997-08-01), Wake

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