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.
SpeedVoIP, Inc. is a leading designer and manufacturer of innovative and cost-effective VoIP telephony products, and becomes a major OEM vendor of VoIP terminal products and solutions in the rapidly growing global IP telephony market.