Cisco 6851 IP Phone - Corded - Charcoal - 4 x Total Line - VoIP - Caller ID - Speakerphone - 2 x Network (RJ-45) - PoE Ports - SIP, IPv4, DHCP, SNTP, NAT, STUN, UDP, TCP, LLDP, SRTP, TLS, .. Protocol(s)

Electrical power and data are transmitted using a single cable to devices such as Access Points, IP cameras or IP phones Enjoy the internet to its max and get cost-effective voice communication to areas like lobbies, guest rooms, and conference halls Enjoy crystal-clear voice calls traveled over the internet with the efficient VoIP technology