Circuit Testing Through Integrated Digital Access

As digital transmission expands within telecommunication networks, maintenance tools for those networks evolve as well. For testing digitized services (including voice, voiceband data, and digital data-like services), digital test equipment most efficiently analyzes circuit failures. One such device, the AT&T Remote Measurement System-Digital (RMS-D), utilizes digital access and measurement techniques to test both switched and nonswitched services. The capabilities of the RMS-D, and the testing needs of the special services digital network it fulfills, are described here. Examples of how the RMS-D effectively utilizes the digital transmission network for access are discussed for different circuit densities.