Product Name: IP PhoneModel Number: CPH-B662Place of Origin: ChinaFeatures: 1) Software: H.323 V4, MGCP, SIP, Net 2 phone private protocol 2) Audio codec: G.711, G.723, G.729 3) DHCP supports LAN or cable modem 4) PPPOE supports ADSL or cable modem 5) Set phone by HTTP web browser (IE 6.0) or Telnet 6) Upgraded by FTP 7) VAD (voice active detect) 8) CNG (comfort noise generation) 9) Dynamic voice jitter buffer 10) G.168 / 165 compatible, 16ms echo cancellation 11) Tone generation and local DTMF regeneration according to the ITU-TE.164 dial plan and customized dial rules 12) 100 entries for quick dial, 80 entries each for missed calls, answered calls and dialed calls 13) Adjustable volume for both handset and speaker 14) Voice prompt 15) Hot line function Specifications: 1) Voltage: 7.5 - 9V DC 2) Power: max. 5.5 - 6.5W 3) Power adapter (AC / DC input): 110 - 240V 4) Network interface: 2 RJ45 Ethernet connectors