Time switch stages and switches

Details Time switch stages and switches Time switch stages and switches

1998-03-06

2000-12-05

Ton, Dang

Multiplex communications

Pathfinding or routing

Through a circuit switch

370370, H04Q 1104

Patent

active

061576395

ABSTRACT:
Sequence integrity and frame integrity are preserved in switching wideband connections through a switch or a switch stage. The speech memory in a switch stage in the switch is extended to include storage positions that in number correspond to the number of time slots in two frames. These storage positions are arranged into two parts of the same size in the speech memory. Furthermore, there is provided a delay control unit in the time switch stage for generating delay information based on control information in the control memory of the switch stage and a determined part of the counter information from a time slot counter circuit. This delay information controls, for each time slot, to/from (depending on if the speech memory is arranged in an outgoing stage or an incoming stage) which one of the first and second parts of the speech memory that user data is switched.

REFERENCES:
patent: 4704716 (1987-11-01), Bowers et al.
patent: 4809259 (1989-02-01), Josson
patent: 4809263 (1989-02-01), van Baardwijk et al.
patent: 4858227 (1989-08-01), Ratcliff
patent: 5594734 (1997-01-01), Worsley et al.
patent: 5841771 (1998-11-01), Irwin et al.

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