01-09-2018, 02:42 PM
A Hayes compatible modem only uses RTS/CTS for flow control, and DTR/DSR for its ready state (and to optionally hang up the modem). This is because the industry standard is to use DTR to let the device know that the computer is ready, and DSR is used to let the computer know it is ready. When you tie these together, then the computer will assert DTR and get the same response (back to itself). RTS/CTS is used as the flow control.
The process is as follows:
Raise DTR to tell the modem that the computer is ready. The modem in response raises DSR to tell the computer it is ready. Then a connection can be made, using either "RING" as the identifier to answer the call, or the state of the RI line to identify when a call is coming in. Once the call is answered, DCD is used to determine when the call has been terminated by the modem. That's it. So, technically, to run a BBS you don't need to change any jumper settings from how the WiModem232 is delivered.
If you are not going to use RTS/CTS then ALL 3 connections need to be cut (RTS, CTS, and DTR/DSR) and follow the instructions in the manual.
The process is as follows:
Raise DTR to tell the modem that the computer is ready. The modem in response raises DSR to tell the computer it is ready. Then a connection can be made, using either "RING" as the identifier to answer the call, or the state of the RI line to identify when a call is coming in. Once the call is answered, DCD is used to determine when the call has been terminated by the modem. That's it. So, technically, to run a BBS you don't need to change any jumper settings from how the WiModem232 is delivered.
If you are not going to use RTS/CTS then ALL 3 connections need to be cut (RTS, CTS, and DTR/DSR) and follow the instructions in the manual.