Avaya G700, Installing And Upgrading, Page: 379 / 808

DS1/T1 CPE loopback jack
Issue 10.2 May 2007 379
Checking the integrity of local equipment
Before you go any further, make sure that the problem is actually on the DS1 span by testing
the equipment that connects to the span at the near end. Test the DS1 circuit pack, and perform
any needed maintenance or repairs.
To test the DS1 span
1. On the SAT, type
busyout board XXXVS
where
XXX
is the administered number of the G700 or G350 (for example, 002 ), and
VS
is
the slot number on the G700 or G350 of the Media Module (for example, V3 ). The
V
is not a
variable and needs to be included in the command exactly where shown. A sample address
for a DS1 circuit pack on a G700 or G350 Media Gateway might look like this:
002V3 .
2. Type
busyout board XXXVS
where
XXX
is the administered number of the G700 or G350 (for example, 002), and
VS
is
the slot number on the G700 or G350 of the Media Module (for example, V3).
3. Type
change ds1 XXXVS
to open the DS1 administration form.
4. Make sure that the near-end csu type field is set to
integrated
.
5. Go to page 2 of the DS1 administration form, and verify that the value of the TX LBO field
is
0dB
.
6. If the value of the TX LBO field is not
0dB
, record the current value.
Then set the TX LBO field to
0dB
for testing.
7. Press ENTER to make the changes.
8. Type
test ds1-loop XXXVS cpe-loopback-jack
where
XXX
is the administered number of the G700 or G350 (for example, 002), and
VS
is
the slot number on the G700 or G350 of the Media Module (for example, V3).
The loopback jack powers up. Active, DS1 facility alarms (if any) clear. After about 20
seconds, the first set of results appears on the terminal.
9. If
FAIL
appears on the terminal display, there may be a fault in the wiring between the ICSU
and the loopback jack or the loopback jack may itself be faulty.
Isolate the problem by replacing the loopback jack and repeating Step 8.
10. If
FAIL
still appears after the loopback jack has been replaced, suspect a wiring problem.
Replace the cable between the ICSU and the loopback jack. Then repeat Step 8.
11. When
PASS
appears on the terminal, proceed with the second part of the test, checking the
integrity of transmitted data.