Avaya 03-300430 User Manual

A UDS1 Interface circuit pack raises a Red alarm when the framing pattern of the incoming DS1 
bit stream has been lost. The Red Alarm Inquiry test checks the framing status of a UDS1 
Interface circuit pack. A UDS1 Interface circuit pack takes 3 seconds to recognize and report a 
Red alarm and 10 seconds to recognize and report the resolution of a Red alarm.
When the UDS1 Interface circuit pack detects a Red alarm, the circuit pack transmits a Yellow 
alarm to the remote DS1 endpoint and sends a Red alarm message to the maintenance 
software. After the Red alarm is confirmed, the maintenance software places every trunk or port 
of the circuit pack into the out-of-service state. The inquiry test runs every 10 minutes until the 
Red alarm is cleared.
When the Red alarm is cleared, the UDS1 Interface circuit pack stops transmitting the Yellow 
alarm to the remote DS1 endpoint. The maintenance software restores all trunks or ports of the 
UDS1 Interface circuit pack to the service state they were in before the Red alarm occurred.

If the UDS1 Interface circuit pack is administered using DMI-BOS signaling, the UDS1 Interface 
circuit pack raises a LMA (Loss of Multiframe Alarm) when it cannot interpret the incoming 
signaling bits to synchronize to the multiframe pattern received in the 24

th

 channel. Once the 

UDS1 Interface circuit pack detects an LMA, the circuit pack transmits a RMA (Remote 
Multiframe Alarm) to the remote DS1 endpoint. Maintenance software handles both Red and 
LMA alarms using the same mechanism.

 

ABRT

Internal system error

1. Retry the command at 1-minute intervals up to 5 times.

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