SPECIFICATION SHEETS

Basic Feature

Support SIP 2.0 (RFC3261) and correlative RFCs
Support IAX2 (Optional)
Support PSTN call(Optional)
SIP supports 4 SIP servers, and backup SIP servers. Can connect to these SIP servers at the same time.
Voice Codec：G.711A/u, G.7231 high/low, G.729a/b, G.722,G.726，iLBC，AMR-NB，AMR-WB
Video Codec: H.263, H.264, MPEG4
Video solution: QCIF、CIF、QVGA
Image format: PEG、PNG、GIF and BMP
Video format: mp4、3gp and flv
Echo cancellation: G.168 Compliance in LEC, additional acoustic echo cancellation(AEC) can reach 96ms max filter length in hands-free mode
Support Voice Gain Setting, VAD, CNG
Support jitter buffer
Full duplex hands-free speakerphone
SIP support SIP domain, SIP authentication (none, basic, MD5), DNS name of server, Peer to Peer/ IP call
DTMF Relay：support inband, SIP info, RFC2833
Support customized music rings
Support STUN
Support SMS based on SIP
Volume(handfree/handset/headset/ring) adjustment
Visual angle adjustable display screen
Professional Speaker/handset HD Voice
Ergonomic handset(acoustical cochlea)
Advanced Application Features
Touched, Large dot matrix LCD display and softkeys make user easier to use
Friendly graphic menu
Multilanguage realizes localization
SIP application: support forward/transfer (blind/attended/alert)/ holding/ waiting/ 3 ways conference/ paging and intercom/ call park/ pickup/   join call/ redial and unredial/ click to dial//secondary dialing automatically Predial
Voice recording during talking /local
Call control features: flexible dial map, hotline, empty calling no. reject service, black list for reject authenticated call, white list, limit call, do no  disturb, auto answer, caller ID, CLIR (reject the anonymous call), CLIP (make a call with anonymous), Dial without register
Human voice caller ID indication
Human voice num keypad indication
Voice recording during talking/auto answer/local
Incoming calls /outgoing calls / missing calls. Each support100 records.
Support Phonebook 2000 records
Phone book records export/import
XML phone book
Photo frame
Media player(mp4, mp3, wav, wma)
Usb disk file management
System files management
Support VoIP(SIP/RTP) encryption (e.g. RC4)

Network Features

WAN/LAN: support switch mode
Support PoE（802.3af
Support DHCP Client on WAN
Support main DNS and secondary DNS server
Support VLAN (Optional)
Support NTP Client
Support VPN L2TP , Open VPN/TLS, SRTP, HTTPS(Optional)
Support QoS with DiffServ(Optional)
Support MD5 authentication
Network tools in telnet server: including ping, trace route, telnet client

Maintenance and Management

Android 2.1
Third party android application, e.g. email, IM, internet Radio, web browser
Application market
Desktop/google search
Desktop widget
Web ,telnet and keypad management
Management with different account right
Support automatic upgrades/configuration deployment
Support encrypted configuration files download with AES
Support pushing message
Support SNMP (Optional)
Support TR-069 (Optional)