Configurations of GSM/VoIP networks allow the service providers to avoid the local Wired Public Switched Network (PSTN) in communication with a GMS mobile handset. As a result, the high rates charged by telephone companies are avoided.
Founded in 1997, ISPhone is one of the world`s first VoIP networks, with members all over the world. Our mission is to help service providers worldwide profit from the telecom revolution. ISPhone provides the network, termination, and billing services tha
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