Problem with CD signal, modem on USB port
to free up a serial port i obtained a USB to serial adapter to connect a modem to my server. This modem is used for remote dialin only. The adapter and modem are quite happy on the USB port with mgetty working well. the problem I have is that of a low DCD (carrier detect signal) which is suppost to be high upon a connection being made. As a result /bin/login is frezzing at the password stage. The modem is already being configured with the AT string "&c1".
Is it possible to turn off the DCD in RedHat 8.0. I beleive that the CD signal is for security purposes (snoppping), however the number is silent and only I know it exists.
Any help is appreciatred