Method and apparatus for detecting multiplexing standard mismatches in communication networks

摘要

A test of digital communications facilities identifies facilities that have AMI/H8ZS line coding mismatches. A test apparatus and method transmits a test tone signal simultaneously on contiguous channels over a trunk to produce a series of consecutive zeros which span the two channels to invoke the B8ZS code. The test apparatus method then compares the sent signal to the received signal to determine whether the received signal deviates from predetermined thresholds. If so, then the currently analyzed channel suffers an AMI/B8ZS mismatch.