Protocol/Standards
SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP, ICMP, DNS (A record, SRV, NAPTR), DHCP, SSH, TFTP, NTP, STUN, SIMPLE, 802.1x, TLS, SRTP*, IPv6
(LDAP, TR-069 for WP820)
Audio codecs and features
Supports G.711µ/A, G.729A/B, G.722 (broadband), iLBC, Opus, In- and out-of-band DTMF (In audio, RFC2833, SIP INFO), VAD, CNG, AEC, PLC, AJB, AGC, ANS
Wi-Fi
Dual-band 802.11 a/b/g/n/ac module (2.4GHz and 5 GHz) Supports 802.11k/r/v (WPA2/WPA2-Enterprise)
Wi-Fi Encryption
WEP, WPA/WPA2, WPA Enterprise
Display
1.8 inch color TFT LCD screen with a resolution of 128x160 pixels
The periphery
2 on-screen buttons, dial, hang up, speaker, phonebook, backlit keyboard, proximity sensor, vibration motor, volume and navigation buttons
Push-to-Talk
Customizable push-to-talk button
Additional ports
3.5mm Headset jack, Micro USB Charging Port, Two Microphones, Two-color LED indicator
Telephony
Hold, transfer, forwarding, 3-way voice conference, call waiting, downloadable XML and LDAP phone books, auto-dial when you pick up the phone, call log, answering machine, flexible number plan, personalized ringtones and music on hold, push to talk, automatic switching to a backup server in case of failure, LDAP
Push-to-Talk
Customizable push-to-talk button
Additional ports
3.5mm Headset jack, Micro USB Charging Port, Two Microphones, Two-color LED indicator
Telephony
Hold, transfer, forwarding, 3-way voice conference, call waiting, downloadable XML and LDAP phone books, auto-dial when you pick up the phone, call log, answering machine, flexible number plan, personalized ringtones and music on hold, push to talk, automatic switching to a backup server in case of failure, LDAP
Phone Book
500 entries
Call log
100 entries
Safety
User and administrator level passwords, MD5 and MD5-sess authentication, configuration file with 256-bit AES encryption, SRTP*, TLS, 802.1x media access control
HD audio
Yes, both in the speaker and in the speaker with broadband audio support, HAC support
QoS
802.11e (WMM) and Layer 3 (ToS, DiffServ, MPLS) QoS
Language support
English, Chinese, German, French, Italian, Portuguese, Russian, Spanish, etc.
Update/Setup
Firmware update via TFTP/HTTP/HTTPS/FTP/FTPS, mass configuration using an encrypted XML configuration file, manual download
Battery and autonomy
Li-Ion, 1500mA, up to 120 hours standby and 6 hours talk time
Nutrition and energy efficiency
Universal power adapter included
Input: 100-240V AC; Output: +5V DC. Current, 1A (5W)
Temperature and humidity Operating temperature: 0ºC to 45ºC
Operating humidity: 10 to 90% (non
-condensing) Storage temperature: -20 °C to 60 °C
Storage humidity: 10% to 90% (non-condensing)
Case Protection
No