Nortel Networks 9150 - Manual (Page 386)

356 Remote Gateway 9150 Installation and Administration Guide
Troubleshooting Standard 3.1
Device connectivity
This section identifies some problems that can occur on the data network, and
describes what to do to resolve them.
Symptom descriptions
If you are not able to establish or maintain data network connectivity, perform
troubleshooting as described in the following table.
Note: To enable valid loopback testing of serial ports and cables, Nortel
recommends that you use a breakout box.
Symptom What to do
SERIAL CONNECTION FAILED
displays when attempting to
connect to the Remote Gateway
9150 unit.
1 Ensure that you entered the logon ID
and password correctly when trying to
establish the connection.
2 Ensure that someone else is not already
logged on to the Remote Gateway 9150
unit.
3 Ensure that you selected the correct
COM port when trying to establish the
connection.
4 Verify that no other applications on the
administration PC are using the COM
port.
5 Verify that the serial connection is good.
6 Using a breakout box, verify that the
COM port is active.
7 Ensure the Remote Gateway 9150 unit
is powered up.
8 Power the Remote Gateway 9150 unit
off, and then back on.
9 Contact your Nortel distributor. There
might be a hardware problem.