ATQ0E1V1
This should make your modem: give result codes on your screen (Q0), show the characters that you enter (E1), and use OK instead of the numerical result code 0 (V1). If you still get no OK, the reason may still be in the modem. I have seen modems get "indigestion problems" when too many commands are given to them. Try give a command to return it to its factory setting. This command is not the same on all Hayes-compatible modems. On most of them, you can use one of the following: AT&F, ATF or ATZ (on some modems ATZ is used to reset to the stored configuration). Locate the correct command to use in the modem's user manual. Then, try ATQ0E1V1 again. If you are still without success, check your choice of modem port. If there are several communication connectors at the back of your computer, test these. If this doesn't help, connect the modem cable to the most probable jack. Now, test the communication port for a response from the modem using another communications program setting. Press ALT-P, select another port (choice 20 - 23), press ESC and try "AT" again (or ATQ0E1V1). If there is still no reaction, test the computer's other communications connectors.
If you have a mouse connected to your computers, make sure that it is not using the same port as your communications program.
Problems with the communications port are often caused by other equipment. Remove all extra equipment (like a PC-fax card or a mouse), and all associated software (often represented by a line starting with "DRIVER=" in CONFIG.SYS, or a resident program driving a mouse). Remove all resident programs from memory before testing.
If you are still at the same unfortunate stage, chances are that the problem is either in the cable or the modem. If you know others who are into data communication, visit them for help. Bring your cable and your modem to have them tested in an environment where things work. It is easier to isolate a problem by testing your units in sequence on your helper's system. First, the cable. Connect it between his computer and his modem. Test the connection to his modem with your cable as the only foreign element. If the test is successful, your cable is OK. Next, the modem. If the test is successful, your modem is in order. The most probable cause of your problems is your computer's communications port.
In communications, many parts have to work together. You may have problems with more than one of them at the same time. The rule is to test step by step to eliminate possible problems.
If you get no reply from your modem, when it is connected to your friend's computer, chances are that it needs to be repaired. Call the seller for help. A last refuge is to buy an extra communications card for your computer . . .
Does your modem have contact with the phone line?
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You have contact between your computer and modem. The modem answers
"OK" as assumed. We now have to test if there is contact with the
phone line. That is easy.
Enter the following command and press ENTER:
ATQ0E1V1
When the modem answers OK, enter the dialing command: