Zoom 3035 - Manual (Page 20)

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20
Solution
The most common error with modems is that the communica-
tions software is not configured for the same COM port as the
modem. Check which COM port the modem is using. Make sure
that the software’s COM port setting matches the modem’s COM
port setting.
Another problem is that COM port resources may be in use by
another device. Make sure that the COM port resources used by
the modem are not being used by any other device, such as a
soundcard.
Problem
You type an AT command line in a terminal application and
press Enter, but your modem fails to execute the command line.
Or there was no response after executing a command.
Solution
Be sure you type AT at the beginning of the command line.
Make sure the communications software is configured for the
same COM port as your modem.
Be sure your modem is not in data mode when you type the
command. Use the escape character sequence to switch to ter-
minal (or command) mode (The default escape sequence is to
wait at least one second, type +++, and wait another second or
more.)
If you typed a command but did not receive an OK response from
your modem, the E0 and Q1 commands may be in effect, dis-
abling echo and responses. Verify this with the &V command. To
enable echo and responses, type ATE1Q0 and press Enter.
Problem
The modem speaker volume is too low or too high.
Solution
Your modem has a small speaker on board that gives you audi-
ble feedback of dial tones and remote connection signals (hand-
shaking). This is not the same as the speaker that you may have
connected to your sound card.
If the software allows you to control the volume, make sure the
speaker is enabled and set to a comfortable volume.