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TONE-BD (Tone-Clock Circuit)
Issue 1 June 2005 2351
Notes:
a. See XXX-BD (Common Port Circuit Pack/Media Module)
on page 2539 for descriptions of
these tests.
b. See TONE-PT (Tone Generator)
on page 2353 for descriptions of these tests.
c. See TDM-CLK (TDM Bus Clock)
on page 2252 for descriptions of these tests.
d. This test runs only on the standby IPSI or Tone-Clock circuit in a port network with
duplicated Tone-Clocks (high- or critical-reliability systems). The circuit pack must be a
TN780 with firmware version 2 or above.
e. See ETR-PT (Enhanced Tone Receiver Port)
on page 1167 for test description.
Clock Health Inquiry Test (#46)
This inquiry reads special data stored in memory to determine if this IPSI or Tone-Clock circuit
pack had a loss of any of three clock types:
● SYSCLK
● SYSFM
● SYSDCLK
If this data indicates this IPSI or Tone-Clock circuit pack had a loss of any of these clocks, the
inquiry reports FAIL. In addition, if TDM-CLK error 1 is at threshold, this test will FAIL. TDM-CLK
error 1 indicates a suspect clock is at the edge of its specified frequency. If the circuit pack did
not have a loss of clock or TDM-CLK error 1 at threshold, the inquiry reports PASS.
This is not really a test, in the sense that it simply reports status held by the system, and does
not generate new information or raise alarms. If this test fails with no Error Code, there is at
least one Major alarm against an IPSI or Tone-Clock circuit pack. If this test fails with an Error
Code of 1, there is at least one Minor off-board alarm against a TDM-CLK.
Table 841: Test #46 Clock Health Inquiry Test
Error
Code
Test
Result
Description / Recommendation
ABRT Internal system error.
Retry the command at 11-minute intervals up to 5 times.
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