Avaya 03-300430 User Manual

Flashing yellow

2.7 seconds on

0.3 seconds off

Active

An external timing source is being used as 

a synchronization reference

1

.

1. For a Tone-Clock in the master PN, the external source is a primary or secondary DS1 source, or a 

Stratum-3 clock. For a Tone-Clock in a slave PN, the external source is the Expansion Interface circuit 
pack.

Flashing yellow

0.3 seconds on

2.7 seconds off

Active

The local oscillator on the IPSI or 

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

0.1 sec on, 0.2 sec off,

0.1 sec on, 0.4 sec off,

0.4 sec on, 0.4 sec off

Standby

Maintenance software is testing the 

standby circuit pack (the standby 

Tone-Clock is providing tones).

Double blink

yellow

0.3 sec on, 0.3 sec off, 

0.3 sec on, 2.4 sec off,

Active

TN2312 or 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 amber 

LED may come on and off intermittently as 

ETR-PTs on the board are used for 

tone-detection services.