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.
Voizbay is a leading communications company at the forefront of Internet telephony technology. Voizbay offers high-quality voice services to carriers, enterprises, service providers, and consumers worldwide.