Voice Features
Support 2 SIP accounts
Codec:G.711A/u, G.7231 high/low, G.729
Echo cancellation: Support G.168, and Hands-free can support 96ms
Full duplex hands-free speakerphone
Support Voice Gain Setting, Jitter Buffer, VAD, CNG
NAT transverse:support STUN client
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 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 conference call 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, 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
Special Functions
3 flexible function button
4 speed-up dial button
Support N Pad record
Support desk position and wall-mountable
English, Spanish, Czechoslovak alternative