Serial Port: Difference between revisions

However, the remote computer is a limiting factor: ''it'' may not be ready to receive. Thus the above signal definitions are modified so that the local computer raises RTS to indicate that it is ready to '''''receive''''' rather than send, and that the cable connects RTS to the remote computer's CTS - which still means "Clear To Send".

 

 

This, then, is the current definition of a "null modem" cable. It swaps the relevant pins, and one computer can tell the other to pause transmitting while it catches up: