It is a device capturing and controling all the signals, which are being created by the whole system, especially the made and received phone call signals. The device is mostly used for connecting regular phone system with the Internet and backwards.
Citel is a provider of unique Voice over Internet Protocol solutions. Citel''s Portico TVA (Telephone VoIP Adapter) enables companies to migrate to IP telephony by leveraging their existing wiring infrastructure, reducing the cost and time involved in the
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