AddPac AP-GS1001C is an entry level VoIP-GSM gateway, designed to work with one GSM channel. The device allows you to connect to the VoIP-telephony, analog lines and GSM networks. At the same time, users are able to transfer traffic in any direction lines are connected to: VoIP to GSM; an analog network to GSM; from analog to VoIP network.
Citel PBXgateways are installed at the central PBX location, and EXTenders are deployed at branch offices, call centers, or at home offices over managed IP connections, DSL, cable, or analog circuits