Avaya G450 Installing And Upgrading page 268

Power supplies and adjunct systems
5. Step through
Table 28: DS1 Troubleshooting
Condition
The value of the
Test: cpe-loopback-jack field is
Pattern 3-in-24
The value of the Synchronized field is N
The value of the Synchronized field
remains N after 5 tries
The value of the Bit-error count field is
non-zero
The value of the Synchronized field is Y
The value of the Bit-error count field
pegs at 65535 or increments by 100s or
1000s each time you repeat step 1
The value of the Bit-error count field
is 0
Once you are fairly certain that the test is reporting no errors (after at least 1 error-free
minute), confirm that the 3-in-24 pattern error detector is operating.
6. Type test ds1-loop XXXVS inject-single-bit-error.
where XXX is the administered number of the G450 (for example, 002), and VS is the slot
number on the G450 of the Media Module (for example, V3).
7. Type list meas ds1 sum XXXVS to display the bit error count again.
268 Installation and Upgrades for the Avaya G450 Media Gateway
Table 28 to troubleshoot.
Solution
The loopback jack test is active.
Retry the test 5 times.
Excessive bit errors are likely. Check for
intermittent connections or broken wires in
an SPE receive or transmit pair, and repair
as necessary. Then repeat step 1.
Repeat step 1 several times.
The DS1 circuit pack has synchronized to
the looped 3-in-24 pattern and is counting
bit errors in the pattern.
Suspect loose or corroded connections,
severe crosstalk, or impedance imbalances
between the two conductors of the receive
or transmit pair. Wiring may need
replacement.
There are no obvious wiring problems.
Verify this by repeating step 1 at 1-minute
to 10-minute intervals until you are certain.
If the test reports no errors for 1 minute, the
error rate is less than 1 in 10
reports no errors for 10 minutes, the error
rate is less than 1 in 10
8
. If the test
9
.