User manual

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Maintenance Object Repair Procedures
Page 10-1499UDS1-BD (UDS1 Interface Circuit Pack)
10
CSU Repeater Loopback Test (#1211)
This test is destructive.
The CSU Repeater Loopback (RLB) Test causes a loopback at the far-edge of
the local AT&T 120A1 CSU Module and tests the connection from the TN464F
DS1 board to and including the CSU Module circuitry. This test will only be
performed if the AT&T 120A1 CSU Module is present, administered, and
connected to a 1.544 Mbps TN464F DS1 circuit pack on the back of the port
carrier.
The test is destructive and can only be initiated by a system technician
demanded
test ds1-loop PCSS ds1/csu-loopback-tests command.
All trunks or ports on the UDS1 Interface circuit pack must be busied out via the
system technician busyout board command before running the RLB Test.
When the RLB Test is initiated, maintenance software sends an appropriate
message to the TN464F UDS1 Interface circuit pack to start the test. The board
will set up the RLB loopback, transmit a test pattern, and verify that the pattern is
PASS The ELB test executed successfully. The test pattern was transmitted and
received successfully over the connection from the TN464F DS1 board to
the near-edge of the 120A1 CSU Module.
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. Ensure that the board translations are correct. Execute the add ds1
PCSS command 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 this is the case, the
board is shut down. Reseating the board will re-initialize the board.
3. If the board was found to be correctly inserted in step 1, then 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 linkage between the internal ID and the port.
Table 10-504. TEST #1210 CSU Equipment Loopback Test — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page