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* Data Modem Format.
. Speed : 300bps - 56Kbps.
. V42, V.42bis, MNP 2-5.
. Bell : Bell 103, Bel 212A.
. Automatic rate negotiation.
* Caller ID,Detection And Decode.
. US Bellcore, UK And Japanese Standard.
* DTMF Tone generation.
* DC 3.3V Power. Current Under 50mA
* UART With Flow Control.
* AT Command Set Support.
* Integrated DAA.
. Capacitive Isolation.
. Parallel Phone Detection.
. Globally Compliant Line Interface.
* Ring Detection, Call Porcess Support, World Wide Operation.