The following procedure is used to initialize a Supra 14.4k faxmodem. The commands below program the modem for remote access or dialout use with CCI Concurrent Dos and should be done in the order presented. The commands (less their comments) need to be sent to the modem. The easiest way to do this would be to set the port as an AUX port and use ADUMB to initialize the modem. Set handshaking to none for this exercise. Don't forget to use the AUX command to use the correct AUX port the modem is connected to. COM1 is AUX0, COM2 is AUX1, and the first Addon Port is AUX2. You should see an OK after hitting return for each command as an indicator that the modem understood the command.

AT&F2 Set up factory options using preferred error correction and data compression parameters for IBM PCs.

AT&C1 DCD indicates when carrier from remote modem is present.

AT&D3 Perform soft reset (similar to ATZ command).

AT&K3 Enable bidirectional hardware (RTS/CTS) flow control.

If setting up for dial in use,  do this next step. If setting up for dialout use, skip it. 

ATS0=1 This will set modem to auto-answer after 1 ring.

If setting up for dialout use, do this next step.  If setting up for dial in use, skip it.

ATS0=0 This will set modem to no answer the phone.

AT&Y0 Power up using NVRAM #0 settings.

ATW2 Result codes not reported and connect reports (DCE) speed.

ATE0 Do not echo back characters. At this point, no characters will be echoed back.

AT&W0 This will save all your AT commands to modem's memory.

AT&V This command will display the active and stored profile settings. This should confirm the above settings.