Main Feature:

• Android 4.2 OS
• High quality video call
• SIP 2.0 (RFC3261) and correlative RFCs
• 6 SIP servers and Backup SIP proxy servers
• SIP UDP/TCP/TLS
• HDMI
• USB Host
• Acoustic echo cancellation (AEC) – 128ms max filter length in duplex speaker phone mode
• PLC & adaptive jitter buffer

Call Feature:

• Call Forwarding, Transfer, Holding, Waiting, Conference
• BLF List
• Capable of 10 way conversation
  Join Call
• Pickup
• Call Completion
• Hot desk function
• Soft DSS Key (Upto 100)
• Auto Redial / un-redial
• Support multi line and pre-dial
• Support messaging and MWI
• Voice recording during talking /local
• Flexible dial plan
• Hotline/Warm-line
• Call Rejection
• Black List
• Barring function for outgoing calls
• Do Not Disturb
• Auto Answer (Hands- free / Headset)
• Caller ID display
• CLIR (rejects anonymous calls)
• CLIP (to make an anonymous call)
• Dial without registration
• Supports Call Logs with Missed / Incoming / Outgoing calls
• Intercom/Intercom barge
• Password dial
• Headset ring
• Direct IP call without SIP proxy

Codec and Voice Feature:

• Wideband codec: G.722
• Narrowband codec: G.711(A/μ), G.723.1, G.729AB, iLBC, AMR
• DTMF: In-band, Out-of-band(RFC 2833) and SIP INFO
• Full-duplex hands-free speaker phone with AEC (Max filter length –128ms)
• Voice Activity Detection (VAD)
• Comfort Noise Generation (CNG)
• Adaptive jitter buffer
• Packet loss concealment (PLC)
• Audio format: WAV/MP3/OGG

Video Feature:

• Video codec: H.264 / H.263
• Image codec: JPEG/PNG/BMP/GIF
• Video format: MP4/3GP/FLV
• Video call resolution: QCIF / CIF / VGA / 4CIF (1280x720P Optional)
• Bandwidth selection: 64kbps~4Mbps
• Frame rate selection: 10~30fps
• Picture-in-Picture (PIP)
• Video from remote site can be displayed in full screen
• Supports up to 4 video display mode