Circuit switching control method for multiplex communication equ

Details Circuit switching control method for multiplex communication equ Circuit switching control method for multiplex communication equ

1997-02-05

1999-09-14

Hsu, Alpus H.

Multiplex communications

Fault recovery

Bypass an inoperative switch or inoperative element of a...

370237, 370354, 370468, H04J 314, H04L 1226

Patent

active

059533137

ABSTRACT:
A multiplex communication equipment which can switch circuits and which enables cost saving in circuit usage of a public network when the circuit is switched. Multiplex communication equipment 1 with circuit switching control, which is selectively connected to either an active circuit 5, having a large transmission line, or a spare circuit 6, having limited transmission line. A data terminal interface (I/F) 18 is connected to data terminal equipment 2, and a voice terminal I/F 17 is connected to voice terminal equipment 3. An active circuit I/F 13 is connected to circuit 5, and a spare circuit I/F 14 is connected to circuit 6. A multiplexing control section 16 multiplexes data and voice information, and a circuit switching section 15 switches circuits. A control section 11 controls the aforementioned sections, and a memory 12 stores multiplexed information of the active circuit and the spare circuit and circuit switching information, and keeps circuit speed slow by multiplexing minimum required information only at the spare circuit, thus saving the circuit usage charge.

REFERENCES:
patent: 4119815 (1978-10-01), Frankfort et al.
patent: 5515418 (1996-05-01), Yamaguchi et al.
patent: 5661725 (1997-08-01), Buck et al.
patent: 5673253 (1997-09-01), Shaffer
patent: 5675577 (1997-10-01), Komatsu

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