Cisco 8841 IP Phone - Cable - Wall Mountable, Desktop - 5 x Total Line - VoIP - Caller ID - SpeakerphoneUnified Communications Manager, Unified Communications Manager Express, User Connect License - 2 x Network (RJ-45) - PoE Ports - Color - SIP, LLDP-PoE, SDP, DHCP, RTP, RTCP, LLDP, LLDP-MED, SRTP Protocol(s):