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Chapter 4. Troubleshooting 19
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.
If the software does not have speaker settings, add one of the
AT
commands listed below to the initialization string:
L1
for low volume
L2
for medium volume
L3
for highest volume
M0
to turn the speaker off entirely
For example, if you want the volume low and the software uses
the initialization string AT &F, change it to AT &F L1.
Problem
The modem does not automatically dial a call when you send a
Dial command.
Solution
•
Make sure the modem speaker is turned on in your software
so that you can hear dialing sounds. Also, make sure that the
phone line is plugged in.
•
Make sure that you are dialing a valid phone number, includ-
ing any required dial prefixes.
•
If you are using tone dialing on a line that requires pulse dial-
ing, the line may not be able to accept tone-dialed calls. Select
Pulse dialing in your software, or make sure software dialing
prefix is
ATDP
(for pulse dialing):
Double-click
My Computer
, click the
Dial-Up Networking
folder, double-click the icon for your ISP, click
Dial Proper-
ties
, select
Pulse dial
, click
Apply | OK
.
•
Make sure your communications software and modem are
configured for the same COM port.