Grandstream WP822, WiFI Phone, 2 SIP, 2.4 inch (240x320) TFT color LCD, Rechargeable 2000mAh battery, 8 hour

Protocol/standards
SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP, ICMP, DNS (record, SRV,
NAPTR), DHCP, SSH, TFTP, NTP, STUN, SIMPLE, 802.1x, TLS, SRTP, IPv6

Voice codecs and features
Support G.711µ/A, G.729A/B, G.722 (Broadband), iLBC, Opus, In-band and out-of-band DTMF (in audio, RFC2833, SIP INFO), VAD, CNG, AEC, PLC, AJB, AGC, ANS

Wi-Fi
Yes, built-in dual-band Wi-Fi 802.11 a/b/g/n/ac (2.4GHz and 5 GHz). 802.11k/r/v
Supported (WPA2/WPA2-Enterprise).

Wi-Fi encryption
WEP, WPA/WPA2, WPA Enterprise, WPA3, WPA3-Enterprise

Graphic
color TFT LCD display with a diagonal of 2.4 inches (240x320 pixels)

Bluetooth
Yes, built-in

Peripheral devices
3 soft keys, dial, hang up, speakerphone, phonebook, backlit keyboard, proximity sensor, vibration motor, volume button, navigation keys and accelerometer
support for customizable gestures

Customizable button for "push and talk" mode

Auxiliary ports
3.5mm Headset Jack, Micro USB Charging Port, Dual Microphone, Two-color MWI indicator

Telephony
Hold, transfer, forwarding, three-way audio conference, call waiting, call log (up to 100 entries), downloadable phonebook (XML, up to 500 entries), automatic dialing when the handset is lifted, automatic response, flexible dialing plan, personalized music ringtones, server backup and emergency switching, "push and talk", LDAP

Safety
User and administrator level passwords, MD5 and MD5-sess authentication,
256-bit secure configuration file based on AES, SRTP, TLS, access control to the 802.1x transmission medium.

HD Audio
Yes, both on the handset and on the speakerphone with broadband audio support, HAC
is supported

802.11e Quality of Service (WMM) and Level 3 quality of service (ToS, DiffServ, MPLS)

Multilingual English, Chinese, German, French, Italian, Portuguese, Russian, Spanish and other languages.

Update/Initialization Firmware update via TFTP/HTTP/HTTPS/FTP/FTPS, mass initialization using an encrypted XML configuration file, manual download

Power and green energy efficiency
Universal Power adapter included
Input: 100-240 VAC; Output: +5V DC, 1 A (5 W)
Lithium-ion battery 2000 mA, standby time 200 hours and talk time 8 hours

Size
Tube dimensions: 164.0 x 52.0 x 25.8 mm.
Dimensions of the charger stand: 77.9 x 81.2 x 38.2 mm.
Tube weight: 185.90 g.
Tube package weight (not including QIG): 422.60 g.

Temperature and humidity.
Operating temperature: 0°C to 45°C; Operating humidity: 10-90% (non-condensing).
Storage temperature: -20°C to 60°C; Storage humidity: 10-90% (non-condensing).

Compliance with FCC, CE, RCM, IC, UKCA