*Standalone operation,no computer needed *Uses broadband cable/XDSL or network connection for high quality voice over IP *Supports SIP,H.323 v4,MGCP,IAX2,net2phone etc protocol *Large LCD screen display *With Single/double RJ45 broadband socket *With H.323 proxy server inside *Startup H.245 tunnel quickly *supports H.245 and Q.931 keypad out-band DTMF transfering method *Send and receive incoming caller ID with Q.931 protocol *Supports calling directly to IP address *Supports E.164 telephone number calling when gatekeeper used *Search the gatekeeper in LAN automatically *Supports calling to PSTN normal telephone with prepaid card issued by ITSP(net2phone,etalk etc.) *Supports PPPoE(connect to internet with ADSL and cable modem) *User can set the phone with standard web browser(Internet explorer 6.0) or using telnet software *Supports G.723.15.3k/6.3k G.729,G.711A-Law,μ- Law voice encoding and decoding arithmetic *Dynamic voice inspection,CNG (Comfort noise generation),Dynamic voice jitter buffer *According with G.165 16ms echo counteraction *According with ITU-T standard tone(dialing tone,busy tone etc.)and DTMF tone generation and inspection *Supports the dialing rule basing on E.164 coding *Up to 112 groups of fast dialing numbers *40 groups of incoming and outgoing numbers in memory *16 groups of voice message *volume of handset adjustable *volume of speaker adjustable *voice guide