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 circ uit packs exist in the
master port network, this error may mean that one or b oth Tone-Clock
circuit packs a re not TN780s. Verify that the Tone-Clock(s) in the master
port network are TN780s.
System Technician-Demanded T ests: Descripti ons
and Error Codes
Always investigate tests in the order p resented in the following tab le when
inspecting errors in the sys tem. By clearing error cod es 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 co mmands 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 alar m status and reports the results of
the query. The Stratum 3 clock provides the system with th e following six alarm
indications via the TN780 Tone-Clock circuit p ack:
■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 tes t to pass. However, the removed c ards should

still be replaced to restore the Stratum 3 clock to full servic e.

Order of Investigation Short Test
Sequence Long Test
Sequence D/ND1
1. D = Destructive, ND = Non-d estructive
Stratum 3 Clock Alarm Query (#649) X X ND