METHOD AND APPARATUS FOR DETECTING MULTIPLEXING STANDARD MISMATCHES IN COMMUNICATION NETWORKS

摘要

A test of digital communications facilities identifies facilities that haveAMI/B8ZS line coding mismatches. A test apparatus and method transmits a test tone signalsimultaneously on contiguous channels over a trunk to produce a series of consecutive zeroswhich span the two channels to invoke the B8ZS code. The test apparatus method thencompares the sent signal to the received signal to determine whether the received signaldeviates from predetermined thresholds. If so, then the currently analyzed channel suffers anAMI/B8ZS mismatch.