Physical Layer - Avaya MCC1 Maintenance Procedures

Troubleshooting
Troubleshooting ATM
Figure 44: Screen output for the test board 2a01 command
test board 2a01
Port
02A01
02A01
02A01
02A01
02A01
02A01
• The Result should be PASS for each test number. If any of the tests fail, refer to
BCH (ATM B-Channel
Possible Causes
1 The TN230X board is in a slot different from the S8700 Multi-Connect administration.
2 The TN230X did not complete board insertion.

Physical layer

Is there an optical signal between the TN230X and the A500?
1 Does the TN230X's amber LED flash 100ms on/100ms off, indicating a loss of signal on the
fiber? Recall that the TN230X detects continuity problems with either the Transmit (bottom) or
the Receive (top) fibers.
If there is loss of signal on the fiber, refer to
2 Is the A500 port's CD LED off, indicating a loss of signal on the fiber? Note that the A500 detects
continuity problems only with the Receive (right-hand) fiber; the state of the Transmit (left-hand)
fiber is not detected.
3 Enter show signaling summary on the A500 console.
screen,
Figure 45: A500: show signaling summary screen
A500:show signaling summary
Port
------
A1.1
A1.2
188
Maintenance Name
ATM-EI
ATM-EI
ATM-EI
ATM-EI
ATM-EI
ATM-EI
Trunk).
on page 188 shows the screen output.
loc VCI SAP IntType
------- --- -------
1 1 Network
2 2 Network
TEST RESULTS
Alt. Name Test No. Result
316 PASS
598 PASS
1258 PASS
241 PASS
304 PASS
1259 PASS
Fiber link fault isolation
Figure 45, A500: show signaling summary
Signaling ILMI
----------- ----
UNI3.1 No
UNI3.1 No
Error Code
on page 167.
SAP State State
------------ -----
UP UP
UP UP
Maintenance Procedures
December 2003
ATM-