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25 to 25 pin null modem Connecting two 25 pin serial ports
25 to 9 pin correspondence Mapping pins between 25 & 9 pin connectors
25 to 9 pin null modem Connecting 25 pin to 9 pin serial ports
9 to 9 pin null modem Connecting two 9 pin serial ports
baud and BPS Baud rate versus bits per second
common modem problems Hints for modem setup
connectors Connectors and their sex
data bits Discussion of 7/8 data bits
DCE/DTE RS-232 equipment types
duplex Discussion of full and half duplex
noise Some hints on reducing noise in RS-232
parity Discussion of parity
pins Definition of the connector pins
stop bits Discussion of stop bits.
true cables Cables to connect a computer to a modem
voltages Voltages involved in RS-232
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Written by Dave Pearson