COURIER HIGH SPEED MODEMS
Troubleshooting
If your entered command is not displayed, your local echo is OFF. To turn the local echo ON, send the modem the following command:
ATE1 <Enter>
If double characters appear on the screen, both your modem and software are set to local echo ON. Either set your software to local echo OFF, or turn the modem's echo OFF with the following command:
ATE0 <Enter>
If no OK appears on your screen after you completed Step 4, review the following checkpoints:
a.Make sure you type all upper or lower case letters and press <Enter>.
b.Check to see that you set your communications software to the correct serial port. The correct serial port is the port through which the modem is connected to the computer.
c.Make sure your software has put the computer in Terminal mode, so that you can send the modem commands. Then review Step 4, on the previous page.
d.Be sure that DIP switches 1 and 6 are set ON or OFF according to your terminal or software requirements. The table in Appendix B explains each function, and you may also need to review your terminal or communications software documentation.
e.If you set DIP switch 8 OFF, for Dumb mode, reset the modem to Smart mode: set DIP switch 8 to ON.
f.The modem is shipped with DIP switch 3 ON, enabling the result codes. If DIP switch 3 is OFF, set it to the ON position. Then initiate the new switch setting with the following reset command:
ATZ <Enter>
External Modem Set Up
