◆Support SIP 2.0 (RFC3261) and SRTP protocol
◆Support IAX2，iax2 line key call
◆Support 2 SIP lines, the user can register to 2 SIP server at the same time,through a server for any incoming and outgoing calls
◆Support multiple call queuing
◆Speech coding support: Codec:G.711A/u, G.723.1 high/low, G.729a/b, G.722.1,G.726，AMR
◆Support HD voice
◆Echo cancellation:Support G.168, Hands-free can achieve 96 ms echo cancellation
◆Support Voice Gain Setting, VAD, CNG
◆Support for hands-free full-duplex communication
◆SIP support SIP domain, SIP authentication (none, basic, MD5) domain name resolution, peer IP calls
◆DTMF support: SIP info, DTMF Relay, RFC2833
◆Support 9 systems ringtones and three user-defined ringtones
◆Large screen LCD display screen with all soft function keys more easier.
◆Support headphone interface(RJ9)
◆Customizable multinational language versions, English is the default
◆SIP application: Support call forward/transfer(Turn blind/attend transfer/signalling transfer)/ On hold/call waiting/three-way calling/ paging and intercom/Call Park / grab pick / Barge / Auto Callback / Click to Call / secondary dial automatically/Blf/ Presence/ SRTP/ SMS
◆Flexible call control functions:; flexible dialing, support hotline number, Empty calling reject, reject blacklist, authentication call, white list, limit dial, DND, hands-free auto-answer, caller ID (reject anonymous calls ), anonymous calls, no registration call etc.
◆Support received calls / missed calls / dialed calls each record 100
◆Support 500 phone book records
◆Support XML phonebook/browser
◆Support Speed Dial
◆With IP PBX / IMS service code calls configuration operations
◆Support web click to dial the phone book
◆Speech coding based on SIP line configuration
◆Support keyboard lock, the emergency call number and keyboard lock condition
◆Headphones, hands-free ringing
◆Support POE power supply (optional)
NSN9000 3C Certificate for China Compulsory Product 