Chapter 2. 9500 MXC Troubleshooting
Vol. V-2-8 Alcatel-Lucent
• Configuration Not Supported and/or NCC Slot Management: The
plug-in installed is incorrect for the configuration, such as DAC 16x, AUX,
or a RAC installed in a slot configured for a DAC 155o. Check the
configuration required against the plug-in installed. Change either the
configuration, or use the CT Layout screen to select/accept the installed
plug-in.
• SW/HW Incompatible: Typically raised when new hardware is plugged
into an existing INU that has software from an earlier release. To remove the
alarm, compatible 9500 MXC software is required; install the latest
software.
• RAC compatibility
RAC 30V3 is not over-air compatible with a RAC 3X or RAC 40.
RAC 30V3 requires software release 3.3 (April 2006) or later.
• Incorrect circuit connections
No alarms are activated for incorrect circuit connections. An incorrect
assignment means the expected end-to-end circuit connectivity will not
happen. Re-check circuit assignments for all nodes carrying the lost circuit(s).
Take extra care when configuring ring circuits. For guidance refer
Appendix A.
Where the problem is not obvious, use a bus-loopback BER test to track a
single circuit through a 9500 MXC network, beginning at the Node closest to
the Node applying the BER test.
• Incorrect circuit naming and commissioning
All traffic-carrying circuits must be named within the Circuits screen, for the
bus loopback capability to operate:
• Circuits on the bus are identified by their circuit name, as applied in the CT
Circuits screen.
• The name applied to a circuit must be identical at each node carrying that
circuit. If not, circuit identification for bus loopback purposes is very
difficult.
The commissioning tick boxes in DAC and AUX plug-in screens must be set
correctly:
• If not ticked, when valid traffic is detected on a configured circuit, a warning
alarm is displayed: Trib (n) Uncommissioned Traffic.
CT only allows valid cross-connections within a Node; circuit conflicts within a
node are prevented.
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