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DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration
555-233-124
Issue 1
April 2000
Troubleshooting
6-17Troubleshooting ATM-PNC
6
■ Troubleshooting interoperability—Provides guidelines for troubleshooting
■ Physical connections
■ Administration
■ TN2305/TN2306 circuit pack
■ ATM signaling architecture
■ Unusual ATM trouble conditions—Describes difficult-to-diagnose failure
modes in the DEFINITY ECS and ATM switch combinations.
■ DEFINITY ECS ATM-PNC troubleshooting commands—Describes the
following specific troubleshooting commands:
■ change/display atm pnc-pairs
■ list measurements atm pnc-latency
Inspecting LEDs
To get a high-level status of the system, observe the LEDs on the
TN2305/TN2306 ATM interface circuit packs and the ATM switch. For information
on interpreting the LEDs on the ATM switch, refer to your switch’s quick reference
guide. For information on interpreting the LEDs on the TN2305/TN2306 circuit
packs, refer to the following book:
■ DEFINITY Enterprise Communications Server Release 8 Maintenance for
R8r
Troubleshooting synchronization (400A only)
Connected through an ICSU
To troubleshoot 400A synchronization problems in systems where the
synchronization signal connects through an ICSU, follow the procedures in
Table
6-7.
Table 6-7. Troubleshooting 400A synchronization (through an ICSU)
√ Step Action Description
1. Check all connections If the LEDs on the DS1 circuit pack indicate an error
condition, or any of the tests associated with testing the
DS1 circuit pack fails, recheck all cables, connectors, and
the splitter connection to the back of the DS1 circuit pack.
2. Test the circuit pack Test the circuit pack (test board
UUCSS
).
If the tests pass, go to step 14 (release). If a test fails,
continue with step 3.
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