Voip Gsm Gateway With 8 Channels Bridging Between Gsm Network And Ipbased 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 Inband
Codec: G.711a/u Law G.722 G.723.1 G.726 G.729a.
Echo Cancellation: Itut G.168 Lec
Lan: 1 (10/100mbps)
Network: Static Ip Dhcp Client Firewall Vlan Ddns Qos Openvpn