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Original DBL GSM VoIP Gateway(4SIMs)Model: GoIP4 General Information:The GoIP4 GSM VoIP Gate way enables direct routing between IP and GSM network without theuse of a FXO port or the PSTN network.It is the GSM network and the VoIP network connectingseamlessly new poducts. Mobile phone SIM cards will be installed in the device, and GoIP4 userscan be achieved through the GSM network on the car aligh.It bulit-in SIP and H.323, configurationflexibility. SIP can be thoroughly used when electricity came display numbers. With this GoIP4, theusage of VoIP is greatly enhanced with significant savings on long distance and roaming charges. 1. Connection diagram: 1) LAN Connect this port to an Ethernet Switch/Router, the Ethernet of a DSL modem, or other network access equipment. 2) PC Connect a computer or other network device to this port. 3) POWER (DC12V/2000mA) Connect the 12V/2000mA Adapter provided to this power jack. 4) Reset