Беспроводной VoIP телефон, интернет телефон VoIP Ультра-низкий

wifi sip phone VOIP phone IP-004WP1 IP-004WP use MYSON CS6221 chip 2.IP-004WPprovide broadband IP voice service. 3. Support Sip WIFIIP phone is an internet based voice network phone terminal. IP-004WPIP 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. IP-004WPIP phone supports SIP protocols, offers one Ethernet interface and is compatible with various softswitch systems and VoIP voice gateways to provide broadband IP voice service. IP-004WP use MYSON CS6221 chip. Base features: support WIFI 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 Static/Dynamic WAN-IP-Addressingmanagement and provisioning http, telnet, keypad adjustable user password and super password URL based FTP,HTTP, TFTP,HTTPS auto provision,auto upgrad firmware and Configuration from remote TFTP and HTTP server. 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 ,Portuguese English and Chinese. Supported specification and applications 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 RTP: Real-time Transport Protocol RTCP:Real-time Control Protocol remote login protocol HTTP:Hyper Text Transfer protocol FTP:File Transfer protocol TFTP:Trivial File Transfer Protocol call control/Voip Fealures SIP RFC3261 Tone generation and Local DTMF re-generation according with ITU-T G.711(A-law or u-law) G.723.1(6.3kbps,5.3 kbps) G729/GSM/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 Voltage: 9V 24V Power adapter: output DC 5V/800 mA Operation temperature: 0 to 40° C ( 32° to 104°F) Storage temperature: -30° to 65° C (-22° to 149°F) Humidity: 10 to 90% no dew