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Demand test descriptions and error codes - Avaya Support

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Figure 83: Synchronization Troubleshooting, Fig. 3 of 4<br />

B<br />

Slips on<br />

DS1 reference<br />

facilities?<br />

4<br />

Are there<br />

many facilities<br />

with excessive slips?<br />

Yes<br />

Is there a<br />

loss-of-signal or<br />

network alarm?<br />

5<br />

No No<br />

Few<br />

7 Check the overall<br />

timing network to<br />

verify the source is<br />

traceable back to the<br />

same source<br />

(for example, Hillsboro, Mo).<br />

7<br />

Use the facility fault<br />

sectionalization technique<br />

section with slip counts as<br />

the pass/fail indication to<br />

isolate the trouble.<br />

Many<br />

Replace circuit<br />

6<br />

packs:<br />

– IPSI/Tone-Clock in<br />

the PN<br />

– DS1 in PN<br />

SYNC (Port Network Synchronization)<br />

Yes<br />

Problem is in PN,<br />

IPSI’s Tone-Clock Escalate<br />

or DS1s.<br />

Fix DS1-BD <strong>and</strong><br />

UDS1-BD alarms.<br />

5<br />

Escalate, if the<br />

problem is not fixed.<br />

Issue 5 May 2009 907

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