Subscriber line test system for access network

Details Subscriber line test system for access network Subscriber line test system for access network

1999-06-23

2000-12-05

Kuntz, Curtis A.

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

Testing of subscriber loop or terminal

379 29, 379 6, H04M 124

Patent

active

061577049

ABSTRACT:
A remote terminal in an access network where a plurality of exchange and subscriber telephone sets are connected, is provided with an incoming call prohibition control unit for transmitting an incoming call prohibition signal or an incoming call prohibition cancellation signal. The exchange is provided with an incoming call prohibition signal detector unit for receiving the incoming call prohibition signal and the incoming call prohibition cancellation signal, converting the incoming call prohibition signal and the incoming call prohibition cancellation signal to an incoming call prohibition command and an incoming call prohibition cancellation command, respectively, and outputting them to a monitor control unit. The signals from the incoming call prohibition control unit are transmitted to the incoming call prohibition signal detector unit through a transmission line (transmitting apparatus). For a method for transmitting the incoming call prohibition signal or an incoming call prohibition cancellation signal, control messages in a V5.2 interface, tone signals or E1 frame bits can be used.

REFERENCES:
patent: 5623498 (1997-04-01), Pannone
patent: 5805668 (1998-09-01), Kim
patent: 5859895 (1999-01-01), Pomp et al.
patent: 5946372 (1999-08-01), Jones et al.
patent: 5974115 (1999-10-01), Chan et al.
patent: 6034948 (2000-03-01), Nakamura et al.
patent: 6049591 (2000-04-01), Nishi

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