OMX OM-GW2000-1G 1 Port SIP GSM IP GatewayOM GW2000 1G is multi functional VoIP gateway, which interconnects the GSM CDMA wireless network with the IP network. By virtue of inserted SIM cards, the gateway registers mobile numbers to a VoIP softswitch and places calls to the numbers under the IP network. Thus, it can help reducing telephone costs for telecom operators, businesses, SOHO and residential users. OM GW2000 1G not only provides seamless interconnectivity between the GSM CDMA network