Digital Multiplex System

Digital Multiplex System (DMS) is the name shared among several different telephony product lines from Nortel Networks for wireline and wireless operators.

[citation needed] GENBAND (now Ribbon Communications)[2] acquired Nortel CVAS assets including the DMS line in 2011 and rolled it into its IP-based GENiUS platform.

The GENiUS-750nt is the first product to include adaptive nano-tech compression and resynchronization modules from Ericsson, to replace the digital cross-connect (DCS) in place since the earliest DMS releases.

Previously, new technology had entered the telecommunications industry slowly, with the telephone companies amortizing equipment over periods as long as forty years.

However the DMS acronym was mellifluous and was eventually (1975) adopted as the designation for the DMS-10 and DMS-100 family of products, with the "S" standing for "system" rather than "switch".