Support Protocol
SIP (RFC3261, RFC3262,RFC3265), IAX2; RTP and RTCP;
Voice codec: 711a/u, 729a/b
G.168 echo cancellation standard, compliant 96ms with speaker mode
Adjust the volume: including the input/output of handset and the speaker.
Jitter Buffer, VAD, CNG,SIP/IAX2, Domain name register, point-to-point Call
Support the switch automatically of SRV main backup server
Support the Inbound/Outbound transmission; SIP info, DTMF Relay, RFC2833
Many countries' standard ring
NAT transversal: Support STUN, CITRON, AVS Mode
Support SIP domain, SIP Authentication (none,basic,MD5), Domain Name parse
Support two SIP server synchronously, including Pubic Server/ Private server, can make a call by either proxy
Support redundancy public server, can auto switch to backup server when host server has problem.
Support SIP application, including SIP Call forward/transfer/holding/waiting/conference
Support the presence state of server and the presence mechanism of Peer-to-peer
Network Features:
Support two models: Bridge and Router, integrate two ports router function.
Support basic NAT and NAPT.
Support PPPoE for xDSL, and support off hook auto dial.
Support DHCP Client for WAN; DHCP server for LAN.
Support DNS relay for LAN, can provide DNS service for LAN Network equipment
Support the domain parse DNS SRV in WAN port;
Support SNTP Client, can capture the time automatically from the network
Use advanced DSP tech to insure high quality voice
Use advanced jitter buffer tech to prevent the delaying and losing for package information
Support Network Tools, including ping, race route, telnet client
Support three modes to configure WAN port IP, they are: static, DHCP, and PPPoE.
Provide firewall control for small LAN
Provide optional priority level for small LAN
Support Secondly Layer QoS(802.1p)
IP PBX Advanced Function:
IP PBX special function, support 10 groups booking extension numbers, can display directly the online state of the booking numbers by the indicator.if the indicator is green, means it is online; the indicator is green and twinkle,means it is in the course of the call; if red, means it is offline.
Support the voice message, play the message by one key, IVR personality record the message, voice hints.
Call in display, ban calling out, setting no-disturb, answer automatically, dial number automatically while picking up the telephone, quick dial
Dial waiting, call transfer, three ways call, multi-dial forward
Setting the black namelist and confine numbers
Support point-point calling directly
Setting the ended number methods
Setting the ended number add, delete and substitution
Setting the fixed calling ways
Use the number directory to record the contacted name, number and address
Support restrains volume, call detection
Support background yawp
Support to restrain echo and auto gain
Support DIGEST validate and MD5/MD5-sess encapsulation