UDS1-BD (UDS1 Interface Circuit Pack)
Issue 4 May 2002
10-1915 555-233-123
The CPE Loopback Jack Test has the UDS1 Interface circuit pack transmit a
loopback activation code to the CPE Loopback Jack, waits up to 10 seconds for
return of the code to verify the loopback 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
loopback is not established within the 10 seconds, the test returns FAIL or abort.
The status of the CPE Loopback Jack test is available in the hardware error log
via Error Type 3900. Several distinct Aux values give the user information on 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 loopback cleanly, the number of bit errors should be
very low. The command will also display the type of Loopback/Span test executing
(Test field), the type of pattern generated for the Loopback/Span test (Pattern
field), and whether the pattern (i.e. 3-in-24 Pattern) is synchronized
(Synchronized field).
To terminate the test, use test ds1-loop UUCSS end-loopback/span-test or
release board. Using release board restores all trunks or ports on the UDS1
Interface circuit pack to the in-service state.
Table 10-685. TEST #1212 CPE Loopback Jack Test
Error
Code
Te s t
Result Description/Recommendation
ABORT Internal system error
1. Retry the test ds1-loop UUCSS
cpe-loopback-jack-test-begin command at 1-minute
intervals a maximum of 5 times.
1005 ABORT CPE Loopback Jack Test cannot be executed in the current
configuration. To run this test, the TN464F or later suffix UDS1
must be administered for 24-channel operation. The “Bit Rate”
field on the DS1 circuit pack administration form must be set to
“1.544” for 24-channel operation.
1015 ABORT Ports on the UDS1 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 UDS1 Interface circuit pack into the
out-of-service state.
2. Retry the command.
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