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Communication Manager Maintenance-Object Repair Procedures
2340 Maintenance Procedures for Avaya Communication Manager 3.0, Media Gateways and Servers
The active/standby state of a Tone-Clock circuit pack may also be determined by looking at its
LED. A continuously lit red LED on the Tone-Clock circuit pack indicates a reported fault on one
or more of the maintenance objects on the circuit pack. Flashing patterns of the yellow and
green LEDs correspond to the following service states:
1. If the Tone-Clock circuit pack to be replaced is active, then switch to the other Tone-Clock
circuit pack by the following procedure:
a. set tone-clock location, where location is the physical address of the standby
Tone-Clock circuit pack.
Condition Tone-Clock
Circuit State
Explanation
Flashing yellow 2.7 seconds
on,.3 seconds off
Active An external timing source is being used as
a synchronization reference.
1
1. For a Tone-Clock in the master port network, the external source is the primary or secondary DS1 source,
or a Stratum 3 clock. For a Tone-Clock in a slave port network, the external source is the Expansion
Interface circuit pack.
Flashing yellow.3 seconds on,
2.7 seconds off
Active The local oscillator on the Tone-Clock
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.
Yellow LED off Standby The circuit pack is in standby mode,
(neither generating tones nor supplying
clocks).
“Jingle bells” green and yellow.1
sec on,.2 sec off,.1 sec on,.4
sec off,.4 sec on,.4 sec off
Standby Maintenance software is testing the
standby circuit pack (the standby
Tone-Clock is providing tones).
Double blink yellow.3 sec on,.3
sec off,.3 sec on, 2.4 sec off
Active TN2182 has lost all external references
and is in holdover mode.
Other green and yellow patterns Active Maintenance software is testing the active
circuit pack.
Random yellow Standby If the circuit pack is a TN2182, the yellow
LED may come on and off intermittently as
ETR-PTs on the board are used for tone
detection services.