Norstar NT7B75 Caller ID Analog Trunk Cartridge. The NT7B75AAA(x) series of cards came in many versions starting with AAAC and ending with AAAJ when discontinued, but they all work exactly the same.
NOTE: We will only warranty this item if installed by a Nortel technician.
4 Analog CO Lines
Detects and translates incoming CMS/CLASS information for display on Norstar sets
- Modular ICS Core (MICS)
- Compact ICS Core (CICS)
- Fiber and Copper Trunk Modules
- Modular 8x24 Copper Trunk Module