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pulse dialing
One of two dialing methods, in which telephone numbers are
sent as pulses (brief changes in voltage or current intensity)
across the telephone line. Rotary telephones use pulse dialing.
R
register
A part of the modem's memory that contains values that
determine the modem's operating characteristics.
result code
An asynchronous message (in either numbers or words) that the
modem sends to the computer after executing or trying to
execute a command.
RTS
Request-to-Send. A signal from the computer to the modem,
sent via Pin 4 of an EIA RS-232 interface, that states the
computer has data to send.
RXD
Receive Data. Pin 3 of an EIA RS-232 interface that is used by
the computer to receive data from the modem. Conversely, the
modem uses Pin 3 to transmit data to the computer.
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