VoIP solution for enterprise, support PSTN/VoIP conference call, multi sip system register and encrypt communication with 4FXO, maximum 80 extension users.

Protocol interface

Firmly comply with the Sip protocol standard, extensively compatible with the third party SIP terminal, gateway and kinds of server products.
Support multi- network disposal modes: Support ADSL Dynamic Domain Name Server analytical mode, the extensions all around can register the IP-PBX deployed in the Private network via the Internet
Support the realization of the connection with the exterior standard SIP service via the Internet
Support the connection with the PSTN Network via the PSTN gateway of the Standard SIP protocol
Support multi-audio codec: iLBC, GSM, G.729A, G.723.1, G.711U, G.711A
Support out-of band (RFC2833) DTMF
Support the exchange between multi-media: voice, text etc.
Support call queue and multi-Automatic call distribution strategies.
Support voice meeting
Support media services: Voice mail, Auto switchboard and Auto voice secretary etc.
Support call process control such as: call transfer, call displace, smart dial and Non-interruption
Support call authentication and keep accounts
With open exterior application data access interface (optional)
Possess System administrator and user self-service interface in the Web mode.
   
Operation functions

Call forward/backward
Smart dial
Group answering
Extension answering as switchboard
Call restriction
Call's Conference Room
Call queues
IVR Function setup
Personalize announcement
DMZ Network support
Cell Phone binding
Voice mail
Group Functions Setup
Charging function
NAT detection and transverse
Extensions online status
Real-time messages
DDN Support
VPN Support
WEB management mode