Voice Features

Support H323v4 and SIP RFC3261 synchronously

CodecG.711A/u,G.7231 high/low,G.729

Echo cancellationSupport G.168,and Handfree can support 96ms

Support Voice Gain Setting, Jitter Buffer,VAD,CNG,H323 support dual GK, call forward,and Peer to Peer.

NAT transversesupport STUN client, Citron,AVS

SIP support SIP domain,SIP authentication (none,basic,  MD5),DNS name of server,Peer to Peer

SIP support pubic/Private server. Can connect to ISP and Private SIP server at same time

SIP support dual public server

DTMFSupport SIP info,DTMF Relay,RFC2833

SIP application: support Callforward/transfer/holding/waiting

Call  control  features:  Flexible  dial  map,support  Hotline,  Empty  calling  No.  rejectservice, Black list for reject authenticated call, No disturb, Caller ID

Support conference and voice record

Network Features

WAN/LAN:  Support  Bridge  and  Router model.

Support basic NAT and NAPT.

Support PPPoE for xDSL

Support DHCP Client on WAN

Support DHCP Server on LAN

Support DNS Relay, SNTP Client, Firewall

Network  tools  in  telnet  server:  Including ping,race route,telnet client

Maintenance and Management

Support Boot Monitor

Can upgrade firmware through boot monitor

Can config through Web,keypad,Telnet

Can upgrade firmware and configuration file through HTTP,FTP,TFTP