AT&T Partner Plus 5 Slot
The Avaya (Lucent) Partner Plus Carrier provides 5 slots for expansion cards. The processor occupies on slot, leaving a remaining 4 slots for lines, stations, and possibly voicemail.
Five slot carrier
Allows you to add four modules plus the Partner Plus processor to add lines and stations
Comes with Partner power cord
Partner Phones Click Here
Partner Phone Systems & Parts Click Here