Introduction - Multitech MultiModemISDN MTA128ST-USB User Manual

MultiModemISDN User Guide

Introduction

This chapter describes basic problems you may run into with your MTA128ST-USB and
how to solve them. Your MTA128ST-USB was thoroughly tested at the factory before it
was shipped. If you are unable to make a successful connection, or if you experience
data loss during your connection, it is possible that the MTA128ST-USB is defective.
However, it is more likely that the source of your problem lies elsewhere. Problems you
may encounter include the following:
•
•
•
•
•
•
•
•
•
•
If you experience problems, please check the following possibilities before calling Tech
Support (see Chapter 6).
None of the LEDs light when the MTA128ST-USB is on
When you turn on the MTA128ST-USB, the LED indicators on the front panel should
flash briefly as the unit runs a self-test. If the LEDs remain off, the unit probably is not
receiving power.
•
•
•
•
•
•
62
None of the LEDs light when the MTA128ST-USB is on.
The MTA128ST-USB does not respond to commands.
The MTA128ST-USB dials but cannot make a connection.
You can place data calls but not voice calls, or vice versa.
You cannot place two simultaneous data calls.
The MTA128ST-USB disconnects while online.
The MTA128ST-USB cannot connect when answering.
File transfer appears slower than it should be.
Data is being lost.
There are garbage characters on the monitor.
Make sure the MTA128ST-USB's power switch is on, especially if you normally turn
on the unit by turning on a power strip.
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 MTA128ST-USB and
to the wall outlet or power strip.
If the power strip is on and the MTA128ST-USB is switched on, try moving the unit's
power supply to another outlet on the power strip.
Test that the outlet is live by plugging a lamp into it.
The MTA128ST-USB or power supply may be defective. If you have another Multi-
Tech MTA128ST-USB, try swapping units. If the problem goes away, the first unit or
power supply may be defective. Call Tech Support for assistance.
Caution:
MTA128ST-USB