Pulse code modulation terminal equipment

Details Pulse code modulation terminal equipment Pulse code modulation terminal equipment

1989-05-16

1990-03-27

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

371 7, 3701101, H04J 312

Patent

active

049126997

ABSTRACT:
A pulse code modulation terminal equipment, having a first hold circuit which continuously supplies a multiplexer unit with a seizure signal supplied from a seizure supervisory circuit during a predetermined time after a fault is detected. The first hold circuit prevents the seizure signal from being supplied to the multiplexer unit after the lapse of the predetermined time. A second hold circuit continuously supplies a related trunk of an exchange with an answer signal supplied from an answer supervisory circuit even after the fault is detected.

REFERENCES:
patent: 3851311 (1974-11-01), Mila
patent: 4558317 (1985-12-01), Armstrong
patent: 4920921 (1975-11-01), Pitroda et al.

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