NETGEAR TA612V Broadband Voice Adapter, SIP v2, G.711, G.711a, G.726, TCP/IP, NTP, PPPoE, 0 - 40 °C, -20 - 70 °C, 300 g NETGEAR TA612V Broadband Voice Adapter. VoIP protocols: SIP v2, Voice codecs: G.711, G.711a, G.726, Supported network protocols: TCP/IP, NTP, PPPoE. Weight: 300 g. Power requirements: AC 120 - 230 V; 50/60 Hz, Maximum data transfer rate: 0.1 Gbit/s, Dimensions (WxDxH): 171 x 113 x 22 mm. I/O ports: 2 x RJ-11