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User Guide
104
If the power supply is plugged into a power strip, make sure the
power strip is plugged in and its power switch is on.
Make sure the power supply module is firmly connected to the mo-
dem and to the wall outlet or power strip.
If the power strip is on and the modem switch is on, try moving the
modem power supply to another outlet on the power strip.
Test that the outlet is live by plugging a lamp into it.
The modem or power supply may be defective. If you have another
Multi-Tech modem, try swapping modems. If the problem goes
away, the first modem or power supply may be defective. Call Tech
Support for assistance.
CAUTION: Do not under any circumstances replace the power supply
module with one designed for another product, as it can damage the
modem and void your warranty.
The Modem Does Not Respond to Commands
Make sure the modem is plugged in and turned on. (See “None of
the Indicators Light.”)
Make sure you are issuing the modem commands from the data
communications software, either manually in terminal mode or auto-
matically by configuring the software. (You cannot send commands
to the modem from the DOS prompt.)
Make sure you are in terminal mode in your data communications
program, then type AT and press ENTER. If you get an
OK
re-
sponse, your connections are good and the problem likely is in the
connection setup in your communications software.