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6-2 Troubleshooting Guide
Troubleshooting
Introduction
Most problems encountered when installing and using the modem can be corrected if
you carefully read and follow the instructions in the documentation. Use the
Troubleshooting section of this chapter to analyze and correct problems before
calling Telenetics’ Customer Support Center or your local distributor.
The section after the troubleshooting guide tells you how to initiate and terminate
tests. Chapter 4 of the326X Series Modem Reference Guide contains detailed
information on these tests.
Assumptions
• The modem is set to factory default configurations.
• The modem has been installed with all initial cabling complete.
Troubleshooting
This section discusses:
• Dial operation problems
• Synchronous data compression (SDC) mode problems
• Leased line operation problems
The First Step
First, confirm that your data communications application is set up correctly:
• Confirm that your communications software is configured for the correct serial
port to which your modem is connected (i.e., COMM1, COMM2, etc.)
• Confirm the COM port is configured for the data rate, word length, and parity
your configuration requires
• Confirm that the cable connecting the modem to the host equipment is a
DCE-to-DTE straight-through cable
• Confirm the electrical interface of your modem (V.35 or RS-232) and ensure
that you have the correct cable installed
Troubleshooting Steps
Use the table that follows to match your problem with a diagnosis and solution.