AddPac AP-GS1004A is one of the models of inter-network VoIP GSM gateways, through which, it is possible to format a single network unit and to use it for VoIP-telephony, analog communication lines and GSM-network.
Nuvio is the smart choice for internet service providers who wish to offer VoIP services. Nuvio has spent the time and resources building out a nationwide VoIP network so you don`t have to.