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DS1-BD (DS1 Interface Circuit Pack)
Issue 1 June 2005 1009
Yellow Alarm Inquiry Test (#141)
Receiving a Yellow alarm from remote DS1 endpoint indicates that the remote DS1 endpoint
has an out-of-frame condition. The Yellow Alarm Inquiry test is used to determine whether the
remote DS1 endpoint is transmitting a Yellow alarm. The DS1 Interface circuit pack takes
½ second to recognize and report either a:
● Yellow alarm condition
● Cleared Yellow alarm condition
When the DS1 Interface circuit pack detects a Yellow alarm from the remote DS1 endpoint, it
will send a YELLOW-ALARM uplink message to the maintenance software. After the
maintenance software receives the YELLOW-ALARM message, the Yellow Alarm Inquiry test is
run to confirm the Yellow alarm. Once the Yellow alarm is confirmed, the maintenance software
places all trunks on the circuit pack into the out-of-service state. The Inquiry test will be run
every 10 minutes until the Yellow alarm is cleared.
When the Yellow alarm is cleared, the maintenance software restores all trunks on the DS1
Interface circuit pack back to their previous service state before the Yellow alarm is raised.
0
NO
BOARD
The test could not relate the internal ID to the port (no board).
This could be due to incorrect translations, no board is inserted, an
incorrect board is inserted, or an insane board is inserted.
1. Verify that the board’s translations are correct. Use add ds1
location to administer the DS1 interface if it is not already
administered.
2. If board was already administered correctly, check the error log to
determine whether the board is hyperactive. If so, the board was shut
down. Reseating the board will re-initialize it.
3. If the board was found to be correctly inserted in step 1, enter
busyout board
4. Enter reset board
5. Enter release board
6. Enter test board long
This should re-establish the linkage between the internal ID and the
port.
Table 346: Test #140 Red Alarm Inquiry Test (continued)
Error
Code
Test
Result
Description / Recommendation
3 of 3