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Chapter 3. Communicating with Your Modem 13
Your telephone service may include Call Waiting that you can
temporarily suspend by using your phone to dial a special code.
(For example, in the U.S., you can disable call waiting by adding
*70 to your dialing prefix; please check with your local phone
company for the correct code for your area.) You can include that
code, followed by a comma, in the dial string or dial prefix in your
software.
If your software does not handle
AT
commands automatically, it
should provide a place to enter
AT
commands in its setup
menus. However, in some cases you may need to enter
AT
commands directly to the modem, using a communications pro-
gram such as Windows HyperTerminal.
Using Terminal Mode to
Enter AT Commands
Start your communications program.
•
To use Windows HyperTerminal
1
11
1
In Windows XP or 2000, click the
Start
button, point to
Programs
→
Accessories
and click
HyperTerminal
.
In Windows 98 or ME, click the
Start
button, point to
Pro-
grams
→
Accessories
→
Communications
and click
HyperTerminal
.
2
22
2
In all four operating systems, follow the prompts and then,
in the HyperTerminal window, type
AT
plus the command
you need and press
Enter
. You will see an
OK
response.
•
If you are using another communications progra
m, check your
software documentation for instructions.
To return to the factory default settings for the modem, in termi-
nal mode, type
AT &F
and press
Enter
.
Refer to the Troubleshooting section for more tips about AT
commands.