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Chapter 4 Problems and Solutions 23
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
For example, if you want the volume low and
the software uses the initialization string
AT &F, change it to AT &F L1.
Dial Troubleshooting
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, including any required dial prefixes.
If you are using tone dialing on a line that re-
quires pulse dialing, 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).
Make sure your communications software and
modem are configured for the same COM port.
Make sure your modem has hung up from the
previous call. Select Hang Up in your software;
or type ATH in terminal mode.
Voice Troubleshooting
Problem: Voice features do not work, or they work
poorly.
Solution: The PCI faxmodem is designed to work with
voice software that is compatible with Windows
TAPI (Telephony Application Programming In-
terface) or with software that uses IS-101