DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-1582SYNC (Synchronization)
9
The yellow and green LED patterns for the TN768 and TN780 Tone-Clock circuit
pack are as follows:
Table 9-596. Tone-Clock Yellow/Green LED Flashing Codes
Circuit Pack Condition
Tone-Clock
State Explanation
1
flashing yellow
2.7 seconds on
.3 seconds off
1. The external synchronization reference being used is a primary reference, a secondary reference, or
the external stratum 3 clock when the Tone-Clock is in the master port network. The external
synchronization reference used in a slave port network is the Expansion Interface circuit pack.
active This light pattern indicates that an external
timing source is being used as a
synchronization reference.
flashing yellow
.3 seconds on
2.7 seconds off
active This light pattern indicates that the circuit pack
is being used as a synchronization reference.
steady yellow
on
active This light pattern indicates that the light has
been reset but has not been told which
synchronization reference source to use.
steady yellow
off
standby This light pattern indicates that the circuit pack
is in standby mode (neither generating tones
nor supplying clocks).
"jingle bells"
green and yellow
.1 seconds on, .2 seconds off, .1
seconds on, .4 seconds off, .4
seconds on, .4 seconds off,
standby The system is running maintenance tests on
the standby circuit pack. (the standby
Tone-Clock circuit pack is providing tones.)
other green and yellow active The system is running maintenance tests on
the active circuit pack
