User manual
DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si 
555-230-127  
Issue 1
August 1997
Maintenance Object Repair Procedures 
Page 10-1515UDS1-BD (UDS1 Interface Circuit Pack) 
10
Inject Single Bit Error Test (#1215)
This test is destructive.
The Inject Single Bit Error Test will cause a single bit error to be sent within an 
active framed 3-in-24 test pattern.
The test is highly destructive and can only be initiated by a system technician 
demanded 
test ds1-loop PCSS inject-single-bit-error
 command. An attempt to 
use this command will be rejected if none of the three long-duration DS1 
loopback/span tests (CPE Loopback Jack Test, Far CSU Loopback Test, 
One-Way Span Test) are active on a TN464F circuit pack.
All trunks or ports on the UDS1 Interface circuit pack must be busied out via the 
system technician busyout board command before running the Inject Single Bit 
Error Test.
The 
list measurements ds1 summary
 command displays the number of bit errors 
detected (
Loopback/Span Test Bit-Error Count
 field). Injecting this single bit error 
should increment the bit error count of the loopback/span test by one.
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 10-508. TEST #1214 One-Way Span Test  — Continued
Error 
Code
Test 
Result Description/ Recommendation
Continued on next page










