GSM-Gateway Voip

Protocal: TCP/IP V4 (IP V6 auto adapt) ITU-T H.323 V4 Standard H.2250 V4 Standard H.245 V7 Standard H.235 StandardMD5,HMAC-SHA1 ITU-T G.711 Alaw/ULaw, G.729A, G.729AB, and G.723.1 Voice Codec RFC1889 Real Time Data Transmission Proprietary Firewall-Pass-Through Technology SIP V2.0 Standard Simple Traversal of UDP over NAT (STUN) Web-base Management PPP over Ethernet (PPPoE) PPP Authentication Protocol (PAP) Internet Control Message Protocol (ICMP) TFTP Client Hyper Text Transfer Protocol (HTTP) Dynamic Host Configuration Protocol (DHCP) Domain Name System (DNS) User account authentication using MD5 Out-band DTMF Relay: RFC 2833 and SIP Info Hardware spec: ARM9E Processor DSP for voice codec and voice processing Two 10/100 BaseT Ethernet ports with full compliant with IEEE 802.3 LEDs for Ethernet port status One GSM Connection Software spec: LINUX OS Built-in HTTP Web Server PPPoE Dial-up NAT Broadband Router Functions DHCP Client DHCP Server Firmware On-line upgrade Caller ID Multiple Language Support Support Multi_devices Cooperate Mode GSM Voip Gateway