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4 - Troubleshooting
Chapter 4 - Troubleshooting
Introduction
This chapter provides general and specific problem
solving steps. Below are a number of examples of
Problems (in bold text:), Causes (C:), and Solutions
(S:). If your MT3410ZLX is not working properly,
look up the problem and solution here; if
unsuccessful, call Tech Support (see Chapter 5). At
the end of this chapter is some specific steps for
resolving IRQ and COM port conflicts.
No Response to AT Commands
C:
The COMx port that the modem is set to may be
used by another card in the computer already.
S:
Change the COMx port of MT3410ZLX to a
different unused port. It might be best to set it to
COM3 or COM4. 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.
C:
The Interrupt that the modem is using may be
the same Interrupt that another card is using.
S:
Change the IRQ settings to a different, unused,
IRQ. Even if you are not using a serial port
which is set to the same IRQ as the modem, it
can still interfere with the modem.
