Maintenance-Object Repair Procedures
555-233-143
8-640 Issue 1 May 2002
CPE Loopback Jack Test (#1212)
This test is destructive.
The CPE Loopback Jack (CLJ-LB) test causes a loop back at the CPE loop-back
jack and tests the building wiring connection between the TN767E DS1 board and
the CPE loop-back jack.
The test is highly destructive and can only be initiated by a technician-demanded
test ds1-loop UUCSS cpe-loopback-jack-test-begin [number-of-bits
bit-pattern] command. The system technician can either enter a loop-back
activation code on the command line or use the default code (0x47F).
All trunks or ports on the DS1 Interface circuit pack must be busied out via the
system technician busyout board command before running the CPE Loopback
Jack test.
PASS The RLB test executed successfully. The test pattern was transmitted and
received successfully over the connection from the TN767E DS1 board to the
far-edge of the 120A1 CSU module
/T1 sync splitter.
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. Use the add ds1 UUCSS
command 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, issue the busyout
board command.
4. Issue the reset board command.
5. Issue the release busy board command.
6. Issue the test board long command.
This should re-establish the link between the internal ID and the port.
Table 8-256. Test #1211 CSU Repeater Loop-Back Test — Continued
Error
Code
Tes t
Result Description / Recommendation
Continued on next page
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