Allows the addition of up to 6 Norstar Fiber Trunk (12x0), Norstar Fiber Station (0x16), Norstar Analog Station Modules (0x8), or a combination of all three to expand core Modular ICS capacity
Also provides clocking service require to support T1 or ISDN-PRI on the DTI cartridge or an ISDN-BRI cartridge
Fits into slots 1 and 2 of the Modular ICS and works with XC software, and regular DR 1.1 or later software
