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.
We believes that VoIP technology is the heart of every successful business Naytel Telecom helps VoIP Businesses to grow up by extending their footprint by using Terminium networks & connections in the Middle-East region.