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.
Iristel is a leading carrier of international long distance telephone calls and provider of retail prepaid calling cards sold online. We provide high quality service for billions of minutes of international calls through our global VoIP network.
Read more