CMX866 V.22 Bis Modem With AT Commands

Posted on Feb 5, 2014

The CMX867A is a multi-standard modem for use in telephone based information and telemetry systems. Control of the device is via a simple high speed serial bus, compatible with most types of C serial Interface The data transmitted and received by the modem is also transferred over the same serial bus. On-chip programmable Tx and Rx USARTs meeting

CMX866 V.22 Bis Modem With AT Commands
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the requirements of V. 14 are provided for use with asynchronous data and allow unformatted synchronous data to be received or transmitted as 8-bit words. A high-quality DTMF decoder with excellent immunity to falsing on voice and a standard DTMF encoder are included. Alternatively, these blocks CAN be used to transmit and detect user-specific, programmed single and dual-tone signals, call progress signals or modem calling and answering Tones By Consumer Microcircuits Limited

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