Chapter 4 – Troubleshooting & Frequently Asked Questions
Multi-Tech Systems, Inc. MultiModem User Guide
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Make sure the dial-up connections maximum speed matches the modem’s properties maximum
port speed.
•
Try rebooting the PC.
What is the max serial baud rate that this modem supports?
•
Supports up to 460,8000 bps.
Sometimes when I set the modem’s serial rate for auto-baud, it doesn’t respond to AT
commands.
•
This modem supports the auto-baud features, but it is currently not working reliably. The best
option is to set the serial rate to the needed speed (+IPR command).
Why is it that when I set the APN to the modem using the +CGDONT command and then do an
ATZ or recycle power to the modem, the APN is lost?
•
The EDGE modem does not store this setting. The best option is to set this command string as
an initialization command in your application. If you are using a Window dial-up connection, add
this command to the “Extra Initialization” setting in the modem’s properties.
Why is it that my throughput rates are not matching up to the expected EDGE rates?
•
To see maximum throughput rates on the EDGE models you must set the modem’s serial baud
rate and your serial port rate to 230,400 bps and above.
•
If your port supports only 115,200 bps, then you may not see expected EDGE rates.
