Dinstar VoIP GSM Gateways are multi-functional and are used to effectively smooth the transition between PLMN (GSM/CDMA/WCDMA) and VoIP The Dinstar UC2000 series VoIP GSM/3G/4G Gateways offer complete choices scalable from 1 to 64 channels, implement the state-of-the-art functionality in market as always, and enable the smooth transit between mobile and VoIP networks.