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.
Elmer Sinaza is a provider of TDM and VoIP phone calls. Using most recent technologies and extensive relations, Elmer Sinaza permits to cut the costs of phone calls considerably.