Avaya S8700 Maintenance Manual page 1363

DS1-BD (DS1 Interface Circuit Pack)
The CPE Loopback Jack test has the TN767E DS1 Interface circuit pack transmit
a loop-back activation code to the CPE loop-back jack, waits up to 10 seconds for
return of the code to verify the loop back 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
loop back is not established within the 10 seconds, the test returns FAIL.
The status of the CPE Loopback Jack test will be available in the hardware error
log via Error Type #3900. Several distinct aux values will be used to give the user
information of the status of the test.
The list measurements ds1 summary command will display the length of time
the test has been running (Test Duration field) and number of bit errors
detected (Loopback/Span Test Bit-Error Count field). If the test pattern
is being passed through the loop back cleanly, the number of bit errors should be
very low. The command will also display the type of loop-back/span test
executing (Test field), the type of pattern generated for the loop-back/span test
(Pattern field), and whether the pattern (3-in-24 Pattern) is synchronized
(Synchronized field).
To end the test, enter the test ds1-loop UUCSS end-loopback/span-test
command.
Table 8-257. Test #1212 CPE Loopback Jack Test
Error Test
Code Result Description / Recommendation
ABORT Internal system error
1. Retry test ds1-loop UUCSS cpe-loopback-jack-test-begin at 1-minute
1005 ABORT CPE Loopback Jack test cannot be executed in the current configuration. To
run this test, the TN767E (or higher-suffixed) DS1 must be administered for
24-channel operation. The
administration form must be set to "1.544" for 24-channel operation.
1015 ABORT Ports on the DS1 Interface circuit pack have not been busied out to
out-of-service.
1. Enter the busyout board UUCSS command to put all trunks or ports of the
2. Retry the command.
555-233-143
intervals up to 5 times.
Bit Rate
DS1 Interface circuit pack into the out-of-service state.
field on the DS1 circuit pack
Continued on next page
Issue 1 May 2002 8-641