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Nortel 12×0 Fiber Trunk Module (NTBB20FB, NTBB20FG)(Refurbished)

The Norstar Fiber Trunk Module will provide users with 3 expansion slots for trunk cartridges – fiber cable and mounting bracket included.


  • 12×0 Fiber Trunk Modules may be connected to the Modular ICS by a fiber DS30 cable
  • Each Fiber Trunk Module holds up to three trunk cartridges – (DID< LS/DS, E/M, Caller ID and DISA)
  • One emergency transfer port per trunk module
  • All analog trunk cartridges are supported in the fiber trunk module
  • ISDN-BRI cards are supported on Trunk Modules 3 and 4 (2-port expansion) or
    Trunk Modules 7 and 8 (6 or 12-port expansion)
  • T1/PRI digital trunk interface (DTI) cartridges are supported in slot 1 of first 12×0 fiber trunk module
    in MICS 5.0 or higher


  • Compatible with all releases of Norstar Modular ICS
  • To add the Norstar M12X0 Fiber Trunk Module to your Norstar Modular ICS main cabinet, you will need
    one of the following fiber expansion cartridges:

    • 2-Port Fiber Expansion Cartridge
    • 6-Port Fiber Expansion Cartridge
    • 6-Port Combination Fiber Services Cartridge


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