Feature
Hold, transfer, forward, 3-way audio conference, downloadable phonebook (XML, LDAP, up to 1000 items), call waiting, call log (up to 100 records), off-hook auto dial, auto answer, click-to-dial, flexible dial plan, hot desking, personalized music ringtones and music on hold, server redundancy and fail-over, push to talk
Others
Voice Codecs and Capabilities: Support for G.711/a, G.729A/B, G.722 (wide-band), iLBC, Opus, in-band and out-ofband DTMF (In audio, RFC2833, SIP INFO), VAD, CNG, AEC, PLC, AJB, AGC, ANS, Peripherals: 3 soft keys, dial, hangup, speakerphone, phonebook, backlit keypad, proximity sensor, accelerator, vibration motor, volume button and navigation keys, Push-to-Talk: Customizable button for push-to-talk, panic call and other related functions, Durability: Drop-safe from 1.2 meter height.
Specialty
Dual-band WiFi with efficient antenna design and advanced roaming support, Bluetooth for syncing headsets and mobile devices (contacts and call transferring), HD voice & dual MIC design with AEC and Noise Shield Technology, Rechargeable 1500mAh battery, 7.5 hour talk time, 150-hour standby, Accelerometer and configurable button for push-to-talk, panic and other related functions, Micro USB port and 3.5mm headset jack, 2 SIP accounts, 2 lines, Supports custom Android apps that fit the phones screen/keys, portable WiFi IP phone with dual-band WiFi support, built-in Bluetooth, and sophisticated antenna design to allow users to seamlessly roam throughout any WiFi environments