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.
Our mission is to provide the world with quality service, the best alternatives of communication, at a regional, national or international level, "THE OPTION FOR COMMUNICATIONS".Universal Phone Systems, Inc., was founded with the goal to implement differe
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