TONE-BD (Tone-Clock Circuit Pack)
Issue 1 May 2002
8-1179555-233-142
Table 8-500. LED Condition/Tone-Clock Circuit States
Condition
Tone-Clock
Circuit State Explanation
flashing yellow
2.7 seconds on
0.3 seconds off
active An external timing source is being used as a
synchronization reference
1
.
1. The external source is a primary or secondary DS1 source.
flashing yellow
0.3 seconds on
2.7 seconds off
active The local oscillator on the IPSI circuit pack is being used
as a synchronization reference.
yellow
on continuously
active The circuit pack has been reset but has not been told
which synchronization source to use.
“double blink”
yellow
0.3 sec on, 0.3 sec off,
0.3 sec on, 2.4 sec off,
active TN2312 has lost all external references and is in
holdover mode.
other green and yellow
patterns
active Maintenance software is testing the active circuit pack.
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