WIFI VoIP Phone is an internet based voice network phone terminal. CS-820i 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.

    CS-820i IP 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.

Big picture

User's Manual       Firmware

• 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-Addressing

• 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)
  

• management 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
  PPPoE£ºPPP Protocol over Ethernet
  SNTP, Simple Network Time Protocol
  STUN - Simple Traversal of User Datagram ...
  TOS:Type of service
  DNS£ºDomain Name Server
  RTP: Real-time Transport Protocol
  RTCP:Real-time Control Protocol
  Telnet:Internet remote login protocol
  HTTP:Hyper Text Transfer protocol
  FTP:File Transfer protocol
  TFTP:Trivial File Transfer Protocol

• Ethernet Jack --- 1X RJ45 connector (LAN port, VLAN)

• Power port --- 1 X 12V, 0.8A power

• Electric requirements:
  Voltage: 5V ~ 24V
  Power adapter: output DC 12V/800 mA

• Operating requirement:
  Operation temperature: 0 to 40¡ã C ( 32¡ã to 104¡ãF)
  Storage temperature: -30¡ã to 65¡ã C (-22¡ã to 149¡ãF)
  Humidity: 10 to 90% no dew

             Package: gift box ; 1set/box;  10sets/carton
             Dimension(box):300*235*75mm
             Dimension(carton):498¡Á410¡Á345mm
             G.W.:13kg/carton

English language version / Chinese language version