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DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-1611UDS1-BD (UDS1 Interface Circuit Pack)
10
The CPE Loopback Jack (CLJ-LB) Test causes a loopback at the CPE Loopback
Jack and tests the building wiring connection between the TN464F DS1 board
and the CPE Loopback Jack.
The test is highly destructive and can only be initiated by a system technician
demanded
test ds1-loop PCSS cpe-loopback-jack-test-begin
[number-of-bits bit-pattern]
command. The system technician has the choice of
entering a loopback activation code on the command line or using the default
code (0x47F).
All trunks or ports on the UDS1 Interface circuit pack must be busied out via the
system technician busyout board command before running the CSJ Loopback
Test.
The CPE Loopback Test has the TN464F 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.
The status of the CPE Loopback 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 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, enter the
test ds1-loop PCSS end-loopback/span-test
command or the release board command. Using the release board command
will restore all trunks or ports on the TN464F UDS1 Interface circuit pack to the
in-service state.