GRANDSTREAM WP820 - Wi-Fi IP handset

Technical specifications of the Grandstream WP820 phone:


Phone features
- SIP support
- Wi-Fi wireless connection
- Polyphonic ringtones / vibrations
- Call history for 100 numbers (incoming and outgoing calls)
- Phonebook for 500 numbers and 30 groups
- 99 speed dial keys
- Phonebook search during a call
- Synchronise your phonebook with the Auto Provisioning Server
- Redial last number
- Hotkey support
- Call time
- Time and date
- Volume control
- MWI
- Alarm / emergency call
- World time (52 countries)
- Location (52 countries)
- Passing calls (19 countries)
- Calculator
- Language: English, French, German, Spanish Dutch, Portuguese, Italian
- PC-Sync
- Handsfree
- Adjust display brightness and time limit


Call functions:
- Ignore
- Put call on hold
- Call transfer (attended / unattended / consulted)
- Call waiting
- Call transfer (busy / no answer / unconditional)
- Caller ID
- Blocking with caller ID
- Three-party conference


Management
- Automatic booking
- Protocol: TFTP (default) / HTTP / HTTPS
- Assembling SSID by default when power is up
- Automatically sent to automatic backup server
- Configuration elements-network / Wi-Fi / Security / SIP
- Proxy, billing / System configuration (language, time,
- location) / Basic call Last firmware update
- Firmware update
- Firmware update in phone menu from local server
- Protocols: TFTP / HTTP / HTTPSde
- Internet-based configuration tool
- PC-SYNC
- Phone's internet directory
- SYSLOG
- SNTP time synchronisation
- Diagnostics: Network test / WLAN / RTP / Ping / Hardware diagnostics


Wireless internet access
- WLAN profile
- Support 4 profiles
- 1 by default
- 3 modifiable profile
- 1 modifiable profile
- Profile configuration
- SSID
- Security
- Network: DHCP / Static IP
- Encryption
- WEP 64bit / 128 bit
- WPA-PSK / WPA-EAP (WPA and WPA2)
- 802.1x (EAP-MD5, EAP-TTLS, PEAP, EAP-TLS)
- Roaming
- Auto scan
- WMM for QOS


VoIP
- Audio codecs: G.711 aLaw / G.711 uLaw / G.729AB
- Multi-frame support
- Data transfer protocols
- RFC3261: SIP
- SIP Proxy Redundancy (first proxy, second proxy)
- Jitter buffer
- DTMF (incoming data / RFC2833 / SIP INFO)
- RTP / RTCP


Wireless communication:
- IEEE 802.11a / b / g / n support
- Frequency range:
- 2.400 ~ 2.497 GHz
- 5.180 ~ 5.254 GHz
- 5.745 ~ 5.825 GHz
- Channel: 1 ~ 11 (FCC), 1 ~ 13 (ETSI), 1 ~ 14 (Japan)
- CH36, CH40, CH44, CH48
- CH149, CH153, CH157, CH16
- Data rate: 1, 2, 5.5, 6, 9, 11, 12, 24, 36, 48 and 54 Mb / s
- 7.2 ~ 72.2 Mb / s
- Power output: 17dBm (802.11b), 15dBm (802.11g)
- 13dBm (802.11n)
- RX sensitivity: -95 dBm at 1 Mb / s


Keypad
- Numeric keypad (0 ~ 9, *, #), 5-way navigation key, call, end call, 2 programmable keys


Operating conditions
- Temperature: 0 ~ 50℃
- Relative humidity: 10% ~ 85%