Performance and features: * SIP v1 (RFC2543), v2(RFC3261) * Support Route,Two 10/100Mbps MACs * Support T.38(Doing) * IP/TCP/UDP/RTP/RTCP * IP/ICMP/ARP/RARP/SNTP * TFTP Client/DHCP Client/ PPPoE Client * Telnet/HTTP Server * DNS Client * NAT/DHCP Server * Support G.723.1 5.3k/6.3k,G.729,G.711 A-Law,¦Ì-Law audio codec algorithm * Dynamic voice detection Echo cancellation Comfort noise generation * Tone generation and Local DTMF generation and detection according with ITU-T * Settings by HTTP web browser (IE6.0) * Advanced settings by Telnet * Voice prompt * Upgrade by TFTP * 2RJ45 Ports,Built-in Router,conference.Auto-provision or updating by HTTP,FTP or TFTP. * For each GT-P302,it can have 5-SIP account and one PSTN phone number,that means each phone own 6 phone numbers,all can be used as callee at anytime.Fo the caller,these 6 account can be selected by dial different relevant prefix(including switch to PSTN as an ordinary PSTN phone) * GT-P302 has a real FXO port to support router call from PSTN to VOIP or VOIP to PSTN. Main technical index: * Main chip: 32-bit RISC CPU with 125MHz clock rate * Data storage: 2MB SDRAM * Program memory: 1MB Flash memory * Application Network environment: Two 10/100Mbps Fast Ethernet MAC * Echo cancellation: G165 16ms * Store quick dial number: 100 * Record phone number of missed call: 80 * Power loss: 2.7W(max) * Power adapter: input AC 220V,output DC 9V 500mA * Employing condition: * Ambience temperature 0-40C(32-104F) * Relative humidity 10-95% * Atmosphere pressure 86-106Kpa * Overall size: 220, 170, 70mm(L, W, H). 220, 170, 70mm(L, W, H) 1.5kg.