The Norstar 2 Port U BRI Interface Card provides two loops (2 B+D) BRI. It is compatible with CICS Release 2.0 or higher software. It supports two ISDN-BRI U Interfaces per cartridge & Integrated Network Termination Type 1 (NT1) functionality. Interfaces can be individually configured to be a network interface or a station side equipment interface. The Norstar 2 Port U BRI Interface Card is powered by the cartridge slot connector. The LED on cartridge faceplate gives visual indication of circuit status (activated or deactivated). It is compatible with Compact ICS core and Modular ICS core and Fiber Trunk Module. It requires Services Cartridge or Combination Services Cartridge on Compact ICS. In addition, it requires either the Services Cartridge or the Combination Fiber 6 port Services Cartridge on Modular ICS. Requires Service Card.