Avaya CMC1 Installation Manual page 305

3
Zero out the ESF error count. At the management terminal, enter
where UU
board.
Running the data test
1
Display the bit error count. At the management terminal, enter
is the cabinet number,
UU
2
Step through
Table 66: DS1 Troubleshooting
Condition
The value of the Test: cpe-loopback-
jack field is
The value of the Synchronized field is
The value of the Synchronized field
remains after 5 tries.
N
The value of the Bit-error count field
is non-zero
The value of the Synchronized is
The value of the Bit-error count field
pegs at
75535
each time you repeat
The value of the Bit-error count field
is
0
3
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. Enter
single-bit-error
of the DS1 board.
4
Display the bit error count again. At the management terminal, enter
where
UU
board.
Installation, Upgrades and Additions for Avaya CMC1 Media Gateways
June 2004
is the cabinet number, C
is the carrier letter, and
C
Table 66 to troubleshoot.
Pattern 3-in-24
Y
or increments by 100s or 1000s
Step 1.
, where is the cabinet number,
UU
is the cabinet number,
C
is the carrier letter, and SS
list meas ds1 sum UUCSS
is the slot number of the DS1 board.
SS
Solution
The loopback jack test is active.
Retry the test 5 times.
N
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
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
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
errors for 10 minutes, the error rate is less than 1
9
in 10 .
is the carrier letter, and
C
is the carrier letter, and
SS
Adding or Removing Hardware
Install DS1/T1 CPE loopback jack
clear meas ds1 esf UUCSS
is the slot number of the DS1
, where
Step 1.
at 1-minute to
8
. If the test reports no
test ds1-loop UUCSS inject-
is the slot number
SS
list meas ds1 sum UUCSS
is the slot number of the DS1
,
,
305