VoIP phone that using SIP capable with LAN port and WAN port

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 VLAN (optional: voice vlan/data vlan)
QoS with DiffServ
Support DMZ
Support VPN (L2TP/UDP TUNNEL)
Support DNS Relay, SNTP Client, Firewall
Network tools in telnet server: Including ping, trace route, telnet client

Maintenance and Management
Web ,telnet and keypad management
Management with different account right
Upgrade firmware through POST mode
Upgrade firmware through HTTP, FTP or TFTP.
Telnet remote management./ Upload/download setting file
Safe mode provide reliability
Supoort Auto Provisioning (upgrade firmware or configuration file)
Support Syslog