Switching in a telecommunications service node

Details Switching in a telecommunications service node Switching in a telecommunications service node

1994-09-22

1997-03-11

Olms, Douglas W.

Multiplex communications

Pathfinding or routing

Through a circuit switch

370360, 379 94, H04Q 1104

Patent

active

056109121

ABSTRACT:
A switch (25) for a service node (18) forming part of a telecommunications network (FIG. 1), having a switching matrix (32) and a plurality of line interface circuits (37). Each of the line interface circuits (37) includes a cross-point switch (47), a plurality of a first type of processing devices (such as digital signal processors 52) and a second type of processing devices, such as a microprocessor (38). The digital signal processors are connected to the cross-point switch (47) by a serial interface (56) suitable for receiving digitized speech signals. The microprocessor is connected to the cross-point switch via a parallel bus (57) and the cross-point switch includes devices for facilitating a communication between the digital signal processor and the cross-point switch.

REFERENCES:
patent: 4127742 (1978-11-01), Couturier et al.
patent: 4905222 (1990-02-01), Seeger et al.
patent: 5278892 (1994-01-01), Bolliger et al.
patent: 5291479 (1994-03-01), Vaziri et al.
patent: 5313459 (1994-05-01), Matern
patent: 5392278 (1995-02-01), Teel et al.
patent: 5450486 (1995-09-01), Maas et al.

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