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.
Xpander Communications is an IP technology and telecommunications firm based in Margate, FL. With over 20 years telecommunications experience on board, the firm has evolved from a local provider to a global solutions builder with the ability to help any s
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