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.
Alianza Global Communication Services is a communications provider offering Voice Over Internet Protocol (VoIP) telephony services, a less expensive alternative to traditional phone services, to businesses throughout Mexico. By harnessing the power and fa
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