DBL Technology GoIP User Manual
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GoIP User Manualhttp://www.dbltek.com 31 General1.1 IntroductionGoIP is the abbreviated from GSM over IP. It is a new type of VoIP gateway that allows call terminations froma VoIP network to a GSM network and vice versa. Call connections between IP networks and GSM networksare now bridged seamlessly to extend the voice communication coverage significantly. As the traditionalPSTN lines are starting to disappear in developed countries and are not going to be built extensively inunder-developed countries, GSM phones are getting more and more popular all over the world with lower andlower service charges, the emergence of GoIP bridges the gap between the traditional telephone networksand VoIP networks as shown in the diagram below. As a result, local and worldwide voice communicationsare more convenience, lower cost, and broader coverage.You can now make a call from anywhere in the world via a VoIP network and then terminate the call via a GoIPto the local telephone network (PSTN). On the other hand, you can also make a call from the local telephonenetwork to a GoIP (the GSM phone number) and then dial another number via a VoIP network to anywhere inthe world. In these two cases, a VoIP Service provider is required for one side of the call termination. Fortwo fixed locations, it is possible to setup GoIPs at both ends for call terminations without subscribing to aVoIP Service provider.GoIP can also be used to achieve GSM roaming via VoIP. The idea is to route all your incoming GSM calls to aGoIP via call forward or simply insert your SIM card to a GoIP. You can then setup the GoIP to forward allincoming calls to another GSM number in the world via a VoIP service provider. The charge per call from aVoIP service provider is significantly lower than the roaming charge.For office environment, GoIP offers a quick way to replace the traditional PSTN lines or T1/E1 lines to your IPPBX. There is no initial installation/reallocation charge and no need to wait for installation. Depending onour usage, you can add or remove lines as per your requirement. You can even configure the system so thateverybody calls the same number regardless the number of lines available. |
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