RTS (Request to Send) Now that both the equipments are ready, data transmission can occur. If
the DTE has a byte to send, it asserts the RTS signal, which is received by the DCE equipment
(modem in this case).
CTS (Clear to Send) e receiving equipment (the modem in this case) responds to the RTS
signal by this signal. CTS makes it known to the transmitting equipment that buff er space is
available for the incoming data. Together RTS and CTS are used for hardware fl ow control, it
regulates the fl ow of data. If no buff er space is available in the receiver side, the transmission
must wait until the buff er is cleared. ...
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