Avaya 03-300430 User Manual

 

FAIL

UDS1 Interface circuit pack detects a Loss of Signal alarm. The physical 
link is broken or the remote DS1 endpoint is down. Every trunk or port of 
this UDS1 interface circuit pack is out-of-service. If the UDS1 Interface 
circuit pack is designated as the supplier of the system synchronization 
source, the system synchronization maintenance adopts a source 
elsewhere. See 

details. 
If the UDS1 connects to a T1 network facility:

1. Check the physical connection of the UDS1 Interface circuit pack and 

the cable. If a CSU module or a Sync Splitter is physically connected 
to a UDS1-BD board on the back of the port carrier, check the 
physical connection of the CSU module/Sync Splitter and make sure 
the Network Interface cable is plugged into the CSU module’s/Sync 
Splitter’s NETWORK jack.

2. If the UDS1 Interface circuit pack connects to a T1 facility, call the 

vendor of the T1 carrier to diagnose the remote DS1 endpoint. 

3. If the UDS1 Interface circuit pack connects directly to a switch, call the 

system technician of the remote switch to diagnose the DS1 endpoint.

If the UDS1 connects to a line-side terminating device such as a PRI 

terminal adapter:

4. Check the physical connection of the UDS1 Interface circuit pack to 

the terminating device. Check premise distribution system (or 
intra-premise wiring) for physical connection failures. If a CSU module 
or Sync Splitter is physically connected to a UDS1-BD board on the 
back of the port carrier, check the physical connection of the CSU 
module/Sync Splitter and make sure the Network Interface cable is 
plugged into the CSU module’s/Sync Splitter’s NETWORK jack.

5. Contact the vendor of the line-side terminating device to diagnose the 

equipment.

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