Avaya 03-300430 User Manual

Procedure for a single-carrier cabinet system:
This failure indicates that there is no ringing voltage in the carrier where 
the active Tone-Clock circuit pack resides. Other carriers may or may not 
have ringing voltage.

1. If this is a duplicated system, use status system to determine the 

active Tone-Clock circuit pack. Use set tone-clock location to 

make the standby Tone-Clock circuit active, and rerun the test.

a. If the test passes, then the trouble is with the “new” stand by 

Tone-Clock circuit pack. See 

page 2327 for details on replacing the standby Tone-Clock circuit 
pack. After the circuit pack is replaced, use set tone-clock 
location to make this Tone-Clock circuit active, and rerun the 

test.

b. If the test fails, then proceed with Step 2.

2. Unseat every analog circuit pack in the cabinet that contains the 

active Tone-Clock circuit pack, and rerun the test.

3. If the test passes, then the ring generator is healthy and one of the 

analog circuit packs is defective. Replace the analog circuit packs one 
at a time, and rerun the test to determine which circuit pack is causing 
the problem. Replace the defective analog circuit pack. Rerun the 
test. If the test still fails, go to Step 4.

4. Replace the WP-91153 power unit for the affected carrier, and rerun 

the test. If the test still fails, go to Step 5.

5. The active Tone-Clock may be faulty and incorrectly reporting the 

level of the ringing voltage. Replace the active Tone-Clock, and rerun 
the test. See 

on page 2327 for details 

on replacing the active Tone-Clock circuit pack. Rerun the test.

PASS

The analog ringing voltage level is acceptable. For a single-carrier cabinet 

stack, ringing voltage is acceptable in the cabinet containing the active 

Tone-Clock circuit pack.

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