Yealink SIP-T48S

Yealink SIP-T48S IP Phone – Cable – Wall Mountable, Desktop – Black – VoIP – Caller ID – Speakerphone – 2 x Network (RJ-45) – USB – PoE Ports – Color – SIP, SIP v2, NAT, STUN, DHCP, PPPoE, SNTP, UDP, TCP, SRTP, TLS Protocol(s)