Generic Troubleshooting Steps - Mitel 3300 Technician's Handbook

Technician's Handbook

Generic Troubleshooting Steps

Follow the steps below if you can't find the problem when
using the troubleshooting tables in this chapter.
If you still can't find the problem, call Mitel Networks
Technical Support (see "Contacting Mitel" on page 10).
Generic Troubleshooting Steps
1. Verify the status of the LEDs (see Appendix E on
2. In ESM, review the Alarm Details form (System
3. For IP Phone and physical network connectivity
4. For network media problems:
144
page 253 for more information).
Administration Tool/ Maintenance and
Diagnostics).
Identify and fix each alarm.
problems:
a. Verify that the device has power.
b. Verify the status of the port link integrity LEDs at
each end of the cable.
c. Verify that each device transmits a link integrity
pulse (LINK LED on).
d. If the link is down, try with another port.Verify that
proper cabling is installed between the end
devices.
e. Verify that a crossover cable was not installed
instead of a straight-though cable, and vice-versa.
a. If there is excessive noise, check for cabling
problems.
b. If there are excessive collisions check for duplex
mismatch problems.
c. For CRC: check if there is a faulty NIC card or
flow-control.