Phone System Nortel

Nortel Phone System

Toll Free: 877-289-6678

Services/Expansion Cartridges Services Cartridge Combination Services Cartridge NT7B58AAAT

  • Provides clocking for ISDN-BRI circuits

  • Only required if using ISDN-BRI cartridge; and 16 or fewer stations.

  • Installs in the Expansion Card slot in the core unit.

  • Compatible with Compact ICS only.

  • Provides clocking for ISDN-BRI circuits and expansion from 16 to 24 station ports.

  • Required for TCM port expansion.

  • The Combination Services Cartridge replaces the 8-Port TCM Expansion

  • Cartridge that is no longer available.

  • Compatible with Compact ICS only.