Nortel Networks 1000 - Manual (Page 402)

402 NT6D80 MSDL card
Maintenance
Routine maintenance consists of enabling and disabling MSDL cards and
downloading new versions of peripheral software. These activities are
performed by an authorized person such as a system administrator.
Troubleshooting the MSDL consists of determining problem types, isolating
problem sources, and solving the problem. A craftsperson normally
performs these activities.
CS 1000E, CS 1000M, and Meridian 1systems have self-diagnostic
indicators as well as software and hardware tools. These diagnostic
facilities simplify MSDL troubleshooting and reduce mean-time-to-repair
(MTTR). For complete information concerning system maintenance,
refer to Communication Server 1000M and Meridian 1 Large System
Maintenance (NN43021-700).
For complete information regarding software maintenance programs, refer
to Software Input/Output Reference — Administration (NN43001-611).
MSDL states
MSDL states are controlled manually by maintenance programs or
automatically by the system.
Figure 105 "MSDL states" (page 403) shows
MSDL states and the transitions among them. These are the three states
the MSDL may be in:
• Manually disabled
• Enabled
•
System disabled
The following sections describe the relationships between these states.
Manually disabled
In this state, the MSDL is not active. The system does not attempt to
communicate or attempt any automatic maintenance on the MSDL.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.