Physical Layer Interface Standards (PSTN) â¢ EIA RS-232-C/D The ...

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RS232/V.24 PSTN RS232/V.24DTE DCE DCE DTEDTR onDSR onCD onRxDCD offRTS onDial digitsCarrier onData tonesCarrier offDTR onRI onRTS onCTS onTxDRTS offCTS offCD on.CTS onTxDRTS offCTS offCD offDSR offData tonesCarrier offRxDRTS offCTS offCD offDTR offDSR offDTR onDSR off
• V.24◊ Defined by CCITT◊ RS-232 basically compatible with V.24◊ Most apparent difference is pin or circuit identifiers◊ Use CCITT circuit numbers• V.28◊ Same as RS-232C except has faster rise and fall timesIn summary the RS-232D standard isElectrical CCITT V.28Functional CCITT V.24Mechanical ISO 2110Procedural CCITT V.24
Page 1 and 2: Physical Layer Interface Standards
Page 3: Connector designation◊ Under RS-2
Page 7 and 8: • RS-423-A◊ An electrical stand
Page 9 and 10: • EIA-530◊ Uses RS-422 and RS-4
Page 11: OverviewITU - T V seriesTelephoneV.

Physical Layer Interface Standards (PSTN) â¢ EIA RS-232-C/D The ...

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Physical Layer Interface Standards (PSTN) â¢ EIA RS-232-C/D The ...