Mitel MiVoice 5304 IP System Telephone - Refurbished2 x 20 backlit display and 2 lines LED indication: one prime line and one programmable key with LED Eight programmable keys: speed dials, features access codes, paging, conferencing, voice mail access, etc. Message waiting indication, Incoming call visual indication, Adjustable volume ringing controls Dual 10 100 Ethernet Switch for connection with your network and your PC Dual mode supports both SIP and MiNet protocols Very Small footprint on your