This card is required when you have another expansion chassis besides the main unit. It is mounted in the main chassis of the NEC SL1000.   IP4WW-EXIFB-C1 is a Bus Card for Main KSU to connect EXP KSUs

This is the expansion cabinet to expand the system capacity. Up to three 1632ME EXPs can be connected to the 1632M Main KSU. The KSU shape and structure are exactly same as 1632M KSU, however the capability is different. The following facilities are initially equipped. Power supply (110V/240V) 1 external the backup battery connector 3

NEC SL1100 60-Button DSS Console IP4WW-60D DSS The NEC SL1100 DSS Console is a 60-Button DSS Consoles provides one-button access to extensions, trunks, and system features. Features: 2-Step leg angle adjustment 60 programmable keys with LEDs Ideal for receptionists Wall-mounting hardware Uses a digital station port Maximum of (4) DSS Consoles per extension. Maximum of

NEC SL1100 Digital 24-Button Telephone (Black)Model Number IP4WW-24TXH-B-TEL(BK) with (24) User Programmable Function Keys Full-duplex Hands-free Backlit 3-line/24-character display Backlit Dialpad User Programmable Function Keys with Red/Green LED’s (4) Soft Keys (9) Fixed Feature Keys Navigator Key 2-Step Leg Angle Adjustment Headset Jack 9-Ft handset cord