Instruction manual

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140
Issue 1
June 1997
Introduction
Page 1-29
Maintenance Strategy
Check the Modules
If the error logs indicate any modules, see ‘‘Module Problems’’ in Chapter 4.
Check the Control Unit Carrier
Within the control unit, the last possible cause of a problem is the carrier. If the
carrier is damaged, it must be replaced. See ‘‘
Carrier Problems’’ in Chapter 4
for instructions.
Check the Trunks
Troubleshoot the trunks that are connected to the control unit. See Chapter 5,
‘‘Central Office Problems’’.
Check the Central Office
If the error logs indicate the central office (CO) as the source of the problem,
and you have resolved all other possible causes, notify the customer that they
should call the central office and ask the central office to check the problem at
their end (see Chapter 5, ‘‘
Central Office Problems’’):
■ If the problem is in the central office, wait for the CO to fix it. Then
duplicate the problem conditions to ensure that the problem is really
fixed.
■ If the problem persists, get the customer to again call the central office
with the problem.
■ If they indicate that the problem is not in the central office, escalate the
problem as described below.
Escalating the Problem
Escalate any unresolved problems to your technical support organization.