Avaya S8700 Maintenance Manual page 2102

Maintenance-Object Repair Procedures
Incorrectly Connected Administered Fibers
Some physically connected fibers that do not match fiber administration can
cause port network problems that are not detected and alarmed by PNC test. The
symptoms will usually be phone calls not working correctly, and port network
component alarms because of translation mismatches.
This test is unable to detect the case where an SNI is connected to the same type
of board (EI or SNI) as administered but located in a different cabinet but the
same carrier and same slot as the administered fiber endpoint. The administered
fiber endpoint can be viewed with the list fiber-link command. This test can only
detect if the fiber endpoint connected to the SNI is in a different carrier, slot
location than the administered fiber endpoint.
Incorrectly Connected Administered SNI-
to-EI Fibers
If the SNI is connected to the same type of fiber endpoint as the administered fiber
endpoint, but the location is the same as administered except for the cabinet,
every phone call will work incorrectly; some phone calls will not go through and
others will ring the wrong phone.
The test led command can be used in this case to check connectivity.
1. Run the test led port-network command on each administered port
network and verify that the LEDs on the correct port network are lit.
2. If they are not lit, check that the fiber connections to the port network are
consistent with the administered fibers (list fiber-link) that does not light
the LEDs as expected.
3. Run test led switch-node on each administered switch node carrier and
verify that the LEDs on the correct carrier are lit.
4. If they are not, check the connectivity to the switch node carrier that does
not light the LEDs as expected.
Incorrectly Connected SNI-to-SNI Fibers
between Three Switch Nodes
If the system has more than 2 switch nodes, SNI-to-SNI fibers administered
between 2 switch nodes could be incorrectly connected to a third switch node.
This is a problem that could occur during installation or when inter-switch node
fibers are changed. For multiple fibers to a distant switch node, an incorrect
connection would not appear as a problem unless this fiber is used for a
system-link to a port network connected to the distant switch node. The status
sys-link command can be used to determine the boards in the path from an
IPSI-connected EPN to another specific EPN. A specific SNI-to-SNI fiber
connection must be in the system-link path to be checked with the port network
LED test.
8-1380 Issue 1 May 2002 555-233-143