w8sdz%brl@sri-unix.UUCP (10/26/83)
From: Keith Petersen <w8sdz@brl> This sounds to me like a DCD (Data Carrier Detect) status problem. After the modem has hung up and there is no longer any carrier, DCD goes low (unless you have done something with the status option switches on your Hayes Smartmodem to bypass this). It may be that your Interfacer I/O board is set up so that if it does not have DCD it will not receive characters coming in. Many serial cards do this, ignoring input until some external status line line DSR (Data Set Ready) or DCD (Data Carrier Detect) comes "on". The reason your terminal works direct is that it's probably set up to not require these status signals. --Keith