Detailed Product Description

SKU : IP-Phone-820H PHONE series IP phone adopts multiple voice control protocols and voice compression coding methods to directly convert analog voice into IP packet for internet transport, thus effectively using the existing bandwidth to provide PSTN quality voice service. supports IAX2,SIP,protocols,Support Bridge and Router model.Support IAX2 and dual public server, offers Two Ethernet interface and is compatible with various softswitch systems and VoIP voice gateways to provide broadband IP voice service. Enterprise, small office and residential applications Key features: voice Features call hold; Unattended/ attended call transfer call waiting and per call-waiting blocking call forward (Always, busy, no answer, power off) voip speed dial VoIP digital map user define ring tone E.164 dial plan and customize dial rules caller number/name display voice promote configurable jitter buffer size configurable audio frame Support Bridge and Router model Support Headset Support IAX2 and dual sip public server data features Static/Dynamic WAN-IP-Addressing PPPoE management and provisioning http, telnet, keypad adjustable user password and super password URL based FTP,HTTP and TFTP auto provision Configure file download and upload by support four settings storage, switch by keypad safe mode provide reliability four servers store and load by keypad 80 entries each for missed calls, answered calls and dialed calls 100 entries for speed dial number Multiply Language support Interfaces 1 X WAN 1 X LAN Supported specification and applications data networking MAC Address TCP:Transmission Control Protocol DHCP:Dynamic Host Configuration Protocol PPPoEPPP Protocol over Ethernet SNTP, Simple Network Time Protocol STUN - Simple Traversal of User Datagram ... TOS:Type of service DNSDomain Name Server Support Bridge and Router model. RTP: Real-time Transport Protocol RTCP:Real-time Control Protocol Telnet:Internet's remote login protocol HTTP:Hyper Text Transfer protocol FTP:File Transfer protocol TFTP:Trivial File Transfer Protocol call control /voip Features SIP RFC3261 H323 Tone generation and Local DTMF re-generation according with ITU-T voice algorithms G.711(A-law or u-law) G.723.1(6.3kbps,5.3 kbps) G729/iLBC AGC(Auto Gain Control) G.168/165 compliant 16ms echo cancellation AEC(Auto Echo Cancellation) VAD (Voice Activity Detection) CNG(Comfort Noise Generation) Enviromental Electric requirements Voltage: 5V ~ 24V Power adapter: output DC 5V/800 mA Operating requirement Operation temperature: 0 to 40ý C ( 32ý to 104ýF) Storage temperature: -30ý to 65ý C (-22ý to 149ýF) Humidity: 10 to 90% no dew