Patent ID: 6185191
Filing Date: 2001-02-06
Classification: H04M,H04Q

Abstract:
A method of testing the operation of a communication link for transporting ISDN signals, comprising the steps of:(a) interfacing a first location of said communication link with an ISDN test set containing test circuitry that is controllably operative to test ISDN communication capability of said communication link;(b) interfacing a second location of said communication link with a device capable of conducting auxiliary ISDN channel signalling over an auxiliary ISDN channel that is exclusive of an embedded operations channel, and providing a loopback path over at least one ISDN bearer channel to said first location of said communication link;(c) causing said ISDN test set and said device to exchange digital communication messages over said auxiliary ISDN channel that are effective to cause said device to provide said loopback path over at said least one ISDN bearer channel to said ISDN test set at said first location and test a prescribed operational characteristic of said communication link.