The Nortel Norstar LS-DS Trunk Cartridge 4x0 4 CO line card adds 4 CO analog lines to a Modular ICS or a Compact ICS telephone system. Up to 3 LS-DS cartridges can be added to a Norstar 12 x 0 Station Module.This card cannot provide caller ID.

• All LS (Loop Start)/DS (Disconnect Supervision) Trunk Cartridges have Disconnect Supervision capability and are labeled with “DS” on the faceplate.
• Also called the New DS Loop Start Trunk Cartridge.
• Compatible with the Modular ICS core, Fiber and Copper Trunk Modules, the Compact ICS core and the Modular 8x24 Copper Trunk Module.