NEC IP7WW-000U-C1 0 Port Expansion Card is an accessory that supports a trunk card in case the suitable expansion slot is not available for the card.
NEC IP7WW-1PRIDB-C1 Daughter Board can offer a maximum of 1 card per universal chassis and maximum of 3 cards per system.
This NEC IP7WW-2BRIDB-C1 Daughter Boardsupports interface to one (1) to two (2) additional chassis.
This NEC IP7WW-3COIDB-C1 Daughter Board supports caller ID and three (3) CO lines, as well as providing 1 RJ45 (8P9C) jack structured for connections.
NEC IP7WW-VoIP-C1 VoIP GW Daughter Board is licensed to provide for 16 channels in total and can be extended to 128 channels at most once it is mounted to a CPU VoIPBD connector.