Transmission system of telephony circuits over a packet switchin

Details Transmission system of telephony circuits over a packet switchin Transmission system of telephony circuits over a packet switchin

1998-01-21

2000-12-05

Hsu, Alpus H.

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

370476, 370477, 375240, 704500, H04L 1266, H04J 300, H04B 166

Patent

active

061576379

ABSTRACT:
Process for transmitting compressed voice circuits over a packet switching network of the type comprising a plurality of switching nodes (SW-1 to SW-7) interconnected by connection lines and including at least an end switching node (SW-1) connected to a source exchange telephone device (PABX A) and another end switching node (SW-3) connected to a destination exchange telephone device (CX), and comprising the steps of receiving from the source exchange telephone device a sequence of uncompressed frames wherein each frame contains n slots containing each J bytes respectively associated to J voice circuits, compressing the data bits of each voice circuit in order to build a packet containing J compressed voice circuits, and providing this packet to the end switching node for transmission to the destination exchange telephone device.

REFERENCES:
patent: 4890282 (1989-12-01), Lambert et al.
patent: 5297147 (1994-03-01), Shimokasa
patent: 5721820 (1998-02-01), Abali et al.
patent: 5742930 (1998-04-01), Howitt
patent: 5912894 (1999-06-01), Duault et al.

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