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.
4DVision, LLC
4DVISION is a privately held Colorado company. Established in 1995 4DVISION has evolved from a software development company into a Internet Service Provider. 4DVISION is committed to providing excellent services at a reasonable price.
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