... *Supporting DHCP Client or static IP address allocation plan *Supporting 802.1Q VLAN and VLAN Tag Telephone function: Protocol support: SIP ... ,UDP/TCP/IP,RTP/RTCP) TFTP,FTP and HTTP IEEE 802.1P/802.1Q/ToS u 10 Base T/100Base TX DNS Transfer ... port and LAN port;3,Support PPPoE (for ADSL, Cable Modem)4,Upgradeable software;5,Support voice code format: G.711A ...