and RS-232),
* or by reserving in-band control characters to signal flow start and stop (such as the ASCII codes for XON/XOFF).

Hardware flow control

In common RS-232 there are pairs of control lines which are usually referred to as hardware flow control:
* RTS (request to send) and CTS (clear to send), used in RTS flow control
* DTR (data terminal ready)

1.Previous
3.Next