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.
Axvoice delivers high quality Internet Phone Service using VoIP technology to both home and business users. We provide feature rich yet economical services to our clients. Affordability, flexibility and ease-of-use is what Axvoice offers.