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.
Citel’s Portico TVA enables enterprises to connect existing voice infrastructure to a new VoIP platform, saving up to 70% over other VoIP migration alternatives.Citel’s products help eliminate common objections.