Patent ID: 6157704
Filing Date: 2000-12-05
Classification: H04M,H04Q

Abstract:
A subscriber line test system for an access network, comprisingincoming call prohibition control means including:means for monitoring a progress of a speech path test and controlling a generation of an incoming call prohibition signal and an incoming call prohibition cancellation signal;means for inserting an ID of a line to be tested in the incoming call prohibition signal and the incoming call prohibition cancellation signal; andmeans for generating a control message of a common channel signalling system using the incoming call prohibition signal and the incoming call prohibition cancellation signal, andincoming call prohibition signal detecting means including:means for detecting an incoming call prohibition message and an incoming call prohibition cancellation message in which the ID of a line to be tested is set;means for converting the incoming call prohibition message and the incoming call prohibition cancellation message to an incoming call prohibition command and an incoming call prohibition cancellation command, respectively, of an exchange; andmeans for inputting the incoming call prohibition command and the incoming call prohibition cancellation command to a monitor control unit of the exchange,wherein an exchange can be controlled by transmitting and receiving an incoming call prohibition signal and an incoming call prohibition cancellation signal in which messages of a common channel signalling system are used, between the incoming call prohibition control means and the incoming call prohibition signal detecting means.