D-Link DVG 6001G GSM GatewayD-Link DVG 6001G GSM VoIP Gateway is a one SIM Card supported device. It can efficiently implement the flat transition between GSM and VoIP network. The GSM VoIP gateway is made for comfort, ease-of-use to satisfied essential of users. It does not only receive tradition of quality voice communication over IP network but decrease the human resource of VoIP network placement. It’s a cost-effective GSM gateway for call termination and initiation. It is completely compatible with any sip supported PBX.