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.
KINGCALLS offers an alternative calling solution to save you up to 90% on your international calling bills: * With no hidden fees; * No connection charge; * No Monthly recurring charge; * No post completion surcharges