- Allows addition of (1) 3-Port CO Trunk Daughter Board (3COIDB) or (1) PRI Daughter Board (1PRDB), when system has fewer station cards than CO Trunk/PRI Daughter Boards- Only required for system configurations with fewer station cards than CO Trunk/PRI Daughter Boards- Installs in any universal slot of Main or Expansion Chassis
MiscellaneousCompatibility: NEC SL2100 Communication System