H - Electricity – 04 – M
Patent
H - Electricity
04
M
344/1
H04M 3/24 (2006.01) H04J 3/14 (2006.01) H04Q 1/20 (2006.01)
Patent
CA 1320553
27879-1 ABSTRACT OF THE DISCLOSURE A pulse code modulation terminal, 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.
599841
Fetherstonhaugh & Co.
Fujitsu Limited
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