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Nortel DMS Switch

Manufacturer Part Number: DMS

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Nortel DMS
Central Control Complex, Network, Maintenance and Administration, Peripheral Modules

The modular DMS local switching systems directly serves residential and business subscribers with leading-edge communication solutions. Hundreds of local carriers around the world rely on this fully-digital system to reliably deliver superior local exchange (end office) capabilities for serving areas, large metropolitan business districts, large corporations, and a variety of other applications.

DMS switches are divided into four “Functional” areas designed to do certain operations:

  • Central Control Complex – Within the Central Control Complex (CCC), the main program in the switch controls the processing of calls, maintenance and administrative routines, and changes the activity for these routines to other areas of the switch.
  • Network – The Network Modules (NMs) handle the routing of speech paths between the Peripheral Modules (PMs) and keep these speech connections for the rest of the call.
  • Maintenance and Administration – Within the Maintenance and Administration includes Input/Output Controllers (IOCs) – IOCs interface local or remote input/output devices. The I/O devices are used to do testing, maintenance, or administrative functions for the system.
  • Peripheral Modules – Peripheral Modules (PMs) are used as interfaces between digital carrier spans (DS-1), analog trunks, and subscriber lines.

Please refer to Data Sheet for additional specifications.

Nortel DMS Switch models: DMS 100 | DMS 200 | DMS 250 | DMS 300 | DMS 500

Nortel DMS Series Data Sheet