VoIP Service
The common name shared by communication protocols, technologies and methods ensuring the transfer of the voice signal via the Internet network or by any other IP-networks. The signal is transferred by the communication channel in the digital form and, as a rule, before transferring compresses in order to remove abundance.
By using Portech SBK-32 expander for 32 SIM-cards, you can increase the number of channels in the Portech MV-37X GSM VoIP gateway series using the Internet.
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