Yealink SIP-T21P E2

Yealink SIP-T21P E2 IP Phone – Cable – Wall Mountable, Desktop – Charcoal – 2 x Total Line – VoIP – Caller ID – Speakerphone – 2 x Network (RJ-45) – PoE Ports – SIP, RTCP XR, LDAP, SIP v2, NAT, STUN, DHCP, SNTP, UDP, TCP, SRTP, … Protocol(s)