- VoIP GSM gateway with 8 channels, bridging between GSM network and IP-based systems. Designed to slash the cost of telephone calls, it can find the cheapest route and use the most economical SIM card- Number of GSM channels (Max): 8- Network type: 850/900/1800/1900MHz - Protocol: SIP (RFC3261),IAX2- Transport Protocol: UDP,TCP,TLS,SRTP- DTMF: RFC2833, SIP INFO, In-band- Codec: G.711A/U law, G.722, G.723.1, G.726, G.729a.- Echo Cancellation: ITU-T G.168 LEC- LAN: 1 (10/100Mbps)- Network: Static IP, DHCP Client, Firewall, VLAN, DDNS, QoS, OpenVPN- NAT Traversal: Static NAT, STUN- Size: 340x210x44mm- Power Supply: AC 100-240V 50/60Hz 1.5A MAX - Operation Range: 0 to 40C, 32 to 104 F- Storage Range: -20 to 65C, 4 to 149 F- Humidity: 10-90% non-condensing
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