Voice Features
*Support SIP RFC3261 RFC3262 RFC3265
* Codec: G.711A/u, G.729,G.729A/B
* Echo cancellationz:Support G.168 * Support Voice Gain Setting, Jitter Buffer, VAD, CNG, * NAT transverse: support STUN client, VPN * SIP support SIP domain, SIP authentication (none, basic, MD5), DNS name of server, Peer to Peer * SIP support Pubic/Private server. Can connect to Public server and Private SIP server at the same time * SIP support dual public server
* DTMF: Support SIP info, DTMF Relay, RFC2833 * SIP application: support Call forward/transfer/holding/waiting
* Call control features: Flexible dial map Support Hotline Empty calling No. reject service Black list for reject authenticated call No disturb Caller ID
* Support three -way( conference) call
Network Features
Support PPPoE for xDSL.
* Support DHCP Client on WAN
* Support SNTP Client, 802.1p/q,Diffserv * Network tools in telnet server: Including ping, trace 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
* Support Syslog