3 ms·
It seems strange they didn't use DTR since RTS/CTS are usually used for hardware flow control. I can see the point of DSR, which tells the computer the modem ex
by xenadu02 8y ago
It seems strange they didn't use DTR since RTS/CTS are usually used for hardware flow control. I can see the point of DSR, which tells the computer the modem exists... but there is no point in the modem looking for the computer. In theory the PC could have asserted DTR whenever it wanted to activate the control channel.