VOCAL offers Reference Designs for a range of data modem communications applications over PSTN, radio, mobile, satellite and IP networks. Our design solutions are robust, flexible and configurable to meet your specific requirements. Custom solutions are also available for legacy modem installations and industrial environments. Contact us today to discuss your modem application. Modulations and Protocols \tOverview \tV.34, V.22, V.32, V.90, V.91 and V.92 data modulations \tV.42 and V.44 data protocols \tV.59 diagnostics Reference Designs \tModem over IP \tRAS over IP \tAnalog Modem Emulator \tAnalog Terminal Adapter (ATA) VOCAL’s Modem over IP functionality is available as part of an integrated Voice/Fax/Modem over IP solution based on our ATA reference design.