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DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration
555-233-124
Issue 1
April 2000
Installing a DEFINITY ECS ATM-PNC
3-18Synchronization Installation and Testing
3
Table 3-6. Interpretation of the list measurements report
Displayed
Field Function Indication
Test:
cpe-loopbac
k-jack
3-in-24 stress
test pattern
The loopback jack test is active
Synchronize
d
= Y
= N
The DS1 circuit pack is synchronized to the looped
3-in-24 pattern and is counting the bit errors detected
in the pattern until the test is ended.
Retry the test:
1. Stop the test (
test ds1-loop
UUCSS
end
cpe-loopback-jack-test
).
2. Restart the test (
test ds1-loop
UUCSS
cpe-loopback-jack-test-begin
)
3. Repeat Steps 1 and 2 a maximum of 5 times, as
necessary.
If the circuit pack never synchronizes, it is possibly
due to intermittent connections or a broken wire in a
receive or transmit wire pair.
Bit Error
Count
Cumulative
detected
errors
0 indicates that there are no wiring problems.
A count that sits at 65535 or continues to increment
by several hundred to several thousand errors with
each subsequent
list measurements
command
indicates
■ Intermittent or corroded connections
■ Severe crosstalk
■ Impedance imbalances between the two
conductors of the receive or the transmit pairs.
1. Replace wiring, if necessary.
2. Note whether the Extended Super Frame (ESF)
error and performance counters summaries
(errored seconds, bursty errored seconds, and so
forth) also increment. Although these counters are
not used with the loopback jack test, they do
increment as errors occur.
Continued on next page