The Norstar Digital Trunk Interface card (T-1) NT7B74 provides 24 digital channel T1 IDSN connection. Requires Service/Clock card NTBB24 or Norstar 6 port fiber combo cartridge NTBB25. Adds 24 incoming digital T1 lines to your Norstar MICS system. This Norstar T-1 card provides access to 24 digital T-1 or ISDN-PRI channels. It has a built in Channel Service Unit to support the integrity of the digital signaling. This Norstar T-1 card goes into slots 3 or 4 in the core Modular ICS Ksu. The new T-1 card(NT7b74aaaa) can be installed into the 12x0 fiber trunk module.
Manufacturer: Nortel Networks
Item name: Norstar DTI T-1 card
Part Number: NT7B74, NT7B74AAAA
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$349.00 Refurbished