Additional Maintenance Procedures
555-233-143
5-6
Issue 1 May 2002
11. Terminate the test by entering test ds1-loop location end
cpe-loopback-jack-test. Wait about 30 seconds for the DS1 to re-frame
on the incoming signal and clear DS1 facility alarms.
Loopback termination fails under the following conditions:
a. The span is still looped somewhere. This could be at the loopback
jack, at the ICSU, or somewhere in the network. This state is
indicated by a fail code of 1313. If the red LED on the loopback jack
is on, replace the ICSU. Re-run the test and verify that the loopback
test terminates properly. If not, replace the DS1 circuit pack and
repeat the test.
b. The DS1 cannot frame on the incoming span’s signal after the
loopback jack is powered down. This means that there is something
wrong with the receive signal into the loopback jack from the “dumb”
block or the smart jack. If the service provider successfully looped
and tested the span, up to the smart jack, this condition isolates the
problem to the wiring between the loopback jack and the smart jack.
Refer to “Loopback Jack Fault Isolation Procedures” for information
about how to proceed in this case. The test cannot be successfully
terminated until a good signal is received. To properly terminate the
test before a good receive signal is available, enter reset board
location.
12. Restore the “TX LBO” field to the original value recorded in
.
13. Release the DS1 circuit pack using the release board UUCCSSpp
command.
14. Leave the loopback jack connected to the DS1 span.
Loopback Jack Fault Isolation Procedures
This section describes the possible DS1 configurations in which the loopback jack
may be used. These configurations are when:
■
The DS1 provider includes a smart jack.
■
No smart jack is provided at all.
■
A site uses fiber multiplexers.
These configurations are separated into
‘‘Configurations Using a Smart Jack’’
Содержание S8700 Series
Страница 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Страница 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Страница 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Страница 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Страница 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Страница 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...
Страница 1121: ...CARR POW Carrier Power Supply Issue 1 May 2002 8 399 555 233 143 Figure 8 19 Power Distribution Unit J58890CH 1 ...
Страница 1447: ...E DIG RES TN800 reserve slot Issue 1 May 2002 8 725 555 233 143 E DIG RES TN800 reserve slot See ASAI RES ...
Страница 1735: ...LGATE AJ Issue 1 May 2002 8 1013 555 233 143 LGATE AJ See BRI SET LGATE BD See BRI BD LGATE PT See BRI PT ...
Страница 1846: ...Maintenance Object Repair Procedures 555 233 143 8 1124 Issue 1 May 2002 Figure 8 62 TN787 MMI MULTIMEDIA INTERFACE CIRCUIT PACK ...