DS1-BD (DS1 Interface Circuit Pack)
Issue 1 May 2002
8-657555-233-143
ICSU Status LEDs Test (#1227)
The TN767E DS1 circuit pack has four status LEDs on the faceplate in addition to
the three standard faceplate LEDs. These four status LEDs are associated with
the 120A1 Channel Service Unit (CSU) Module that can be connected to the
TN767E board via the I/O connector panel behind the port carrier.
This test is a visual test. It will light the four status LEDs red for 5 seconds, then
light them green for 5 seconds, then light them yellow for 5 seconds, then turn the
LEDs off and returns control of the status LEDs to the circuit pack.
This test will only be executed on TN767E
(or higher-suffixed) DS1 circuit packs
administered for 24-channel operation (1.544 Mbps).
If the 1201 CSU module/T1 sync splitter is not installed, the status LEDs are
always off and this test aborts.
PASS The active long-duration loop-back or span test on the TN767E circuit pack
was successfully deactivated.
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 8-261. Test #1216 End Loopback/Span Test — Continued
Error
Code
Tes t
Result Description / Recommendation
Continued on next page
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