United States Internet Phone

Specifications: Key Features Compliant with ITU-T H.323 V4, MGCP, SIP, NET2PHONE, IAX2, WP Automatic assign IP address & scan gatekeeper 10 Base Ethernet support LAN/ADSL/Cable Modem Compatible with most IP voice systems and devices Dynamic voice jitter buffer, clear & stable voice quality 112 entries for quick dial 40 entries each for missed call, answered call and dialed call 16 entries for voice messages Setting by keypad Provide direct IP to IP call mode Including direct PSTN call by a gateway Easy to setup and configured by Telnet/Web Built-in H.323 proxy to pass NAT Upgrade by TFTP LCD display & review receive calls Full duplex speakerphone, dial-tone, speaker & loudspeaker volume can be digitally adjused independently Technology Parameter Compliant with ITU-T H.323 V4, MGCP, SIP, NET2PHONE, IAX2, WP Voice codec include G.723.1 6.4k/6.3k, G.729 Voice processing ITU G.711 G.711 outband DTMF transmit by H.245 user input or Q.931 keypad Caller ID send and receive by Q.931 G.168/165 compliant 16ms echo cancellation H.235 security authorization based on MD5 VAD (Voice activity detection); CNG (Comfort noise generation; Dynamic voice jitter buffer Automatically gatekeeper discovery in LAN DHCP support for LAN or Cable modem PPPoE support for ADSL or Cable modem