Avaya 03-300430 User Manual

 lists circuit packs that can report slips and related circuit packs whose hardware 

problems that cause those slips.

The following flow chart presents a logical approach to troubleshooting synchronization 
problems in conjunction with the previous background information. Explanatory notes follow the 
charts.

DS1 Interface

Active Tone-Clock in same PN

Expansion Interface

Active Tone-Clock in same PN or circuit pack at 

opposite end of fiber or metallic connection

Switch Node Interface

Circuit pack at opposite end of fiber or metallic 

connection, or active Switch Node Clock circuit pack in 

same switch node carrier

IPSI’s Tone-Clock or Tone-Clock 

circuit pack

Current DS1 reference

UDS1 Interface

Active Tone-Clock in same PN