Owner`s manual

MultiMobile 51
Chapter 4—Troubleshooting
No Response to AT Commands
 The COMx port the TA is set to may conflict with another card.
Change the COMx port of MultiMobile to a different unused port. It
may be best to set it to COM3 or COM4. Even if the serial port is not
set to the same COMx port as the MultiMobile, you can still have
problems. Be sure to update your software COMx port setting as well.
 The Interrupt that the MultiMobile is using may be the same Interrupt
another card is using. Change the IRQ settings to a different, unused
IRQ. Even if the serial port is not set to the same IRQ as the
MultiMobile, you can still have interference with the TA.
 Type AT&F and press Enter. Then type AT again. The MultiMobile
should respond with OK. Otherwise, uninstall the MultiMobile and
install again.
The TA does not execute the command line
 Make sure you are typing AT at the beginning of the command line
(and pressing Enter at the end of the line).
 Make sure the TA is not in Data Mode. Type +++ if necessary.
 Make sure your software is set to the same COMx port as your
MultiMobile.
The TA does not respond after you execute an AT Command
 The echo and/or responses may be turned off by the ATE0Q1
commands. Enable the AT&V1 to check Result Codes.
 Type ATE1Q0 and press Enter to turn on the echo and/or responses.
 Before entering the AT command, make sure the MultiMobile is in
Command Mode and not Data Mode.
The software does not control the TA properly or cannot
detect the TA
 Make sure the software properly configured. Check the initialization
string and dial string.
 Some TSRs (programs that stay in memory after they are loaded) may
conflict with the communications software.
 Try starting your computer without loading any TSRs.