Dinstar 16 Ports GOIP gateway, GSM Gateway VoIP, GoIP GSM Gateway 16 Wireless GSM Ports, Mass SMS, SIP V2.0, PIN Modified !!! 2013 ... the latest price today......Dinstar 16 Ports GOIP gateway, GSM Gateway VoIP, GoIP GSM Gateway - DWG2000B- series VoIP GSMGateway is a ... PBX, failover for PSTN, LCR for call center and PBX and call termination.16 GSM channels Quad-band 850/900/1800/1900MHz Signal ...