Please see below our Nortel DMS Technical Information:
DMS (Digital Multiplex System) is the name shared among several different telephony product lines from Nortel Networks, now Genband, for wireline and wireless operators.
DMS switches are divided into four “Functional” areas designed to do certain operations.
These areas are:
DMS 100 is a class 5 local office with the ability to handle 1,000 to 100,000 lines. It can give basic telephone service or expanded to handle IBN custom calling features. The DMS 100 MTX gives cellular radio services. A local office can also be adapted to Equal Access End Office (EAEO).
DMS 200 has the ability to handle from a few hundred to 60,000 trunks. This switch can also serve a Access Tandem (AT) function. The Traffic Operator Position System (TOPS) puts operator services into the DMS 200. Operator Centralization (OC) allows a single operator location by using the TOPS positions to transfer operator services from other DMS-200 toll centers. The Auxiliary Operator Services System (AOSS) let operator services on calls that need outside information (Such as Directory assistance).
A DMS-100/200 is also available and allows local and toll features described above but also includes an Equal Access End Office (EAEO)/Access Tandem (AT) combination. It has the ability to handle up to 100,000 lines or 60,000 trunks.
The Nortel Networks DMS 250 is a high capacity toll system for specialized common carriers needing tandem switching operations.
The Northern Networks DMS 300 is a toll system designed for international use.
The Nortel Networks DMS 500 is a Local and Long Distance system which combines features of the DMS 100 system, DMS 100/200 TOPS and the DMS 250 system in a single, robust platform.