4 x VoIP (SIP)- GSM conversion 50 sets of LAN -> MOBILE routes setting; 50 sets of MOBILE -> LAN routes setting Voice response for setting & status (dial in from mobile) For call termination (VoIP to GSM) and origination (GSM to VoIP) Standard SIP (RFC2543, RFC3261) protocol,communicates with other gateway or PC To be set on web Specification: SIP protocol: (RFC2543, RFC3261) TCP/IP: IP/TCP/UDP/RTP/RTCP/CMP/ARP/RARP/SNTP DHCP/DNS ClientIEEE802.1P/QToS/DiffServNAT TraversalSTUNuPnPIP AssignmentStatic IPDHCPPPPoE Codec: G.711 u-LawG.711 a-LawG.723.1 (5.3k) G.723.1 (6.3k)G.729AG.729A/BVoice Quality VADCNGAECLECPacket loss GSM Frequency: Dual band 900/1800MHz, Tri band 900/1800/1900MHz Quad band 900/1800/1900/850MHz