Cisco CP-7912G Unified IP Phone Type: Wired VoIP Standards: IEEE 802.1Q /p Protocols: Compatible with Cisco Unified CallManager Version 3.3(2) and later, using the Skinny Client Control Protocol (SCCP) protocol SIP (RFC 2543) Ports: RJ-45 10/100Base-T Power: Inline power Power can also be supplied locally using an optional AC to 48-VDC power adapter (CP-PWR-CUBE-3=), which requires one of the following country-specific cords. Dimensions: 6.5 x 7 x 6(H x W x D) Weight: 1.9 lbs. Temperature: Operating temperature: 32 to 104 degree F (0 to 40 degree C) Storage temperature: 14 to 140 degree F (-10 to 60 degree C)