Communication system

Details Communication system Communication system

1996-10-02

1999-06-22

Zele, Krista

Telephonic communications

Supervisory or control line signaling

Using line or loop condition detection

379156, 379162, 379163, 379382, H04M 100

Patent

active

059150149

ABSTRACT:
An apparatus and a method of setting and confirmation of a value indicative of an on-hook period of a terminal is provided. The value is used as a threshold when distinguishing a hooking pulse for putting communication on hold which is issued by the terminal, from disconnection of a call on the terminal.

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patent: 5144653 (1992-09-01), Masuoka
patent: 5388153 (1995-02-01), Burger et al.
patent: 5410593 (1995-04-01), Kamota
patent: 5483584 (1996-01-01), Hayashi et al.
patent: 5577114 (1996-11-01), Morita et al.

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