The Avaya BM12 button module provides 24 additional programmable line and feature buttons for Avaya 9408 and 9508 digital phones and Avaya 9600 series IP telephones.
For Avaya 9600 series IP phones, the BM12 receives its power directly from the 9600 series IP phone. For Avaya 9408 or 9508 digital telephones, an Avaya 1151C1 power supply or currently manufactured Avaya 1151C1 equivalent (Avaya SPPOE-1A PoE Injector + Y-Adapter for PoE Injector) is required.