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.
Installation and repair of VoIP business phone systems. Superior support service so you get all the advantages of an internet based phone system without the hassle. Quality equipment installed to ensure optimal performance.