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4. QUESTIONS AND ANSWERS
This chapter provides a number of examples of Questions (Q:), Causes (C:),
and Answers (A:). If your modem is not functioning properly, look up the
problem here, or ask your dealer for technical assistance.
Q:The modem does not respond to AT commands.
C:The COMx: port that the modem is set to may be used by another device in
the computer already.
A:Change the COMx: port of the Proxima USB Fax/Modem to a different
unused port. Even if you are not using a serial port which is set to the same
COMx: port as the modem, it can still interfere with the modem. Be sure to
update your software COMx: port setting as well.
Q:The modem does not execute the command line.
C:Make sure you are typing 'AT' at the beginning of command line.
C:Make sure the modem is not in Data Mode. type +++ if necessary.
C:Make sure your software is set to the same COMx: port as the modem is.
Q:The modem does not give a response after an AT command was
executed.
C:The echo and/or responses may be turned off by the ATE0Q1 commands.
Use AT&V to check that.
A:Use ATE1Q0 then Enter to change them back.
C:Make sure the modem is in Command Mode not in Data Mode when you type
the AT command.
Q:The modem gives an 'ERROR' response after an AT command was
executed.
C:Make sure you did not type an invalid command.
C:Make sure your command line is 40 characters or less in length.
Q:The modem goes off-hook and disables the telephone line.
C:The modem may be set to auto-answer the phone when it rings.
A:Disable auto-answer by typing ATS0=0 then Enter at the command line.
Q:The modem does not auto-answer the phone.
C:If necessary, make sure the software is configured to auto-answer the phone.
A:To set auto-answer mode on from the AT commands, type ATS0=n then
press Enter. The n stands for which number of rings the modem will answer
on.
Ex: ATS0=3 takes the modem answer on the third ring.
Q:The software does not control the modem properly or can not detect the
modem.
A:Make sure the software has been set up correctly. Check the initialization
and dial strings.
C:Some TSRs (programs that stay in memory after they are loaded) may
conflict with the communications software.
55
BAUSCH DATACOM
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