DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-1543STRAT-3 (Stratum 3 Clock)
9
This error indicates that the Tone-Clock circuit pack in the master port
network is not a TN780. If duplicate Tone-Clock circuit packs exist in the
master port network, this error may mean that one or both Tone-Clock
circuit packs are not TN780s. Verify that the Tone-Clock(s) in the master
port network are TN780s.
System Technician-Demanded Tests: Descriptions
and Error Codes
Always investigate tests in the order presented in the following table when
inspecting errors in the system. By clearing error codes associated with the
Stratum 3 Clock Alarm Query Test,
for example, you may also clear errors
generated from other tests in the testing sequence.
The
test synchronization
commands also runs the Test Synchronization test
(test #417). Test 417 is described in the SYNC section.
Stratum 3 Clock Alarm Query (#649)
This test queries the Stratum 3 clock for its alarm status and reports the results of
the query. The Stratum 3 clock provides the system with the following six alarm
indications via the TN780 Tone-Clock circuit pack:
■ Reference A failed or CI card A failed.
■ Reference B failed or CI card B failed.
■ One power supply failed.
■ All power supplies failed.
■ One clock unit failed.
■ All clock unit(s) failed.
!
CAUTION:
The removal of a card in the Stratum 3 clock may cause alarm(s) to be
resolved and the query test to pass. However, the removed cards should
still be replaced to restore the Stratum 3 clock to full service.
Order of Investigation
Short Test
Sequence
Long Test
Sequence D/ND
1
1. D = Destructive, ND = Non-destructive
Stratum 3 Clock Alarm Query (#649) X X ND
