Lucent Technologies DEFINITY Installation For Adjuncts And Peripherals page 141

DEFINITY ECS Release 8.2
Installation for Adjuncts and Peripherals 555-233-116
9 DS1/T1 CPE Loopback Jack
Loopback Testing with a Smart Jack
Condition
The value of the Bit-error count field is
greater than 1
The value of the Bit-error count field is still
greater than 1 after you replace the ICSU.
The value of the Bit-error count field is 1
5. End the test. Enter
test DS1-loop location end cpe-loopback-jack-test
6. Wait about 30 seconds for the DS1 to reframe on the incoming signal and
clear DS1 facility alarms.
Condition
Loopback termination fails
with an error code of 1313.
The red LED on the loopback
jack is on.
Loopback termination still
fails.
The DS1 cannot frame on the
incoming span's signal after
the loopback jack power
down.
The span failed the service
provider's loopback test.
The service provider
successfully loop tested the
span, up to the smart jack.
You cannot locate and repair
the problem in the time
available and must termnate
the test.
The test terminated normally.
Solution
Replace the ICSU, and retest.
Replace the DS1 circuit pack, and retest.
The test passed.
Solution
The span is still looped somewhere, possibly at the
loopback jack, at the ICSU, or somewhere in the
network.
Replace the ICSU, and re-run the test.
Replace the DS1 circuit pack, and repeat the test
There is something wrong with the receive signal into the
loopback jack from the dumb block or the smart jack.
The problem is in the service provider's network.
The wiring between the loopback jack and the smart jack
is suspect. Test, and make repairs, as needed.
The test will not terminate normally in the absence of a
good framing signal. You have to reset the circuit pack.
Enter
reset board UUCSS
where UU is the cabinet number, C is the carrier
number, and SS is the slot number of the DS1 board.
Proceed with ''Restoring DS1
April 2000
administration'', below.
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