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UDS1-BD (UDS1 Interface Circuit Pack)
Issue 1 June 2005 2455
CPE Loop-Back Jack Test (#1212)
This test is destructive.
The CPE Loop-Back Jack (CLJ-LB) test causes a loopback at the CPE Loop-Back Jack and
tests the building wiring connection between the UDS1-BD DS1 board and the CPE Loop-Back
Jack.
The test is highly destructive and can only be initiated by test ds1-loop location
cpe-loopback-jack-test-begin [number-of-bits bit-pattern]. The technician
has the choice of entering a loopback activation code on the command line or using the default
code 0x47F.
Each trunk or port on the UDS1 Interface circuit pack must be busied out using busyout
board location before running the CPE Loop-Back Jack test.
The CPE Loop-Back Jack test has the UDS1 Interface circuit pack transmit a loopback
activation code to the CPE Loop-Back Jack, waits up to 10 seconds for return of the code to
verify the loopback has been established, transmits a framed 3-in-24 test pattern, begins
counting bit errors in the received test pattern, and returns a PASS result to indicate that the
pattern was successfully sent. If the loopback is not established within the 10 seconds, the test
returns FAIL or ABRT.
0NO
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. Execute add ds1
location to administer the UDS1 interface if it is not already
administered.
2. If the 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, then enter
busyout board location.
4. Enter reset board location.
5. Enter release board location.
6. Enter test board location long.
This should re-establish the linkage between the internal ID and the port.
Table 869: Test #1211 CSU Repeater Loop-Back Test (continued)
Error
Code
Test
Result
Description / Recommendation
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