Instruction manual

ECLIPSE OMEGA MATRIX INSTRUCTION MANUAL
3-11
If two adjacent nodes are lost on one ring and the other ring has a similar fault
this will be handled as for the loss of a single node where the nodes adjacent to
the failed node will loop-back their connections to the failed nodes healing the
ring. The configuration software will report the failure correctly as two failed
nodes. If two non-adjacent nodes are lost on one ring and the other ring has a
similar fault the nodes adjacent to the failures will loop-back their connections to
the failed nodes healing the ring into 2 separate smaller rings. The configuration
software will report the failure. Note that in this instance the two sub-rings will
be dependent on their Ethernet connections for configuration and data
transmission but there will be no audio path between them.
Fiber-Optic Linking Card Failure
This will be handled as for loss of a single node above. The configuration
software will report the failure.
FAULT TOLERANCE
Dual Card Set Redundant System - Full Redundancy
In the event of single or multiple cable fault or loss of node conditions occurring
on one ring whilst the other ring remains intact the active ring always attempts to
heal itself.
Switching to the secondary ring will cause audio breaks or disturbances and
temporary loss of crosspoint data. The self healing mechanism is performed
autonomously by the fiber linking card whereas the switch-over between
redundant cards and rings requires software or operator intervention.
In all fault cases involving recoverable cable faults or loss of nodes on one or both
both rings the remaining nodes may experience audio breaks or disturbances
and temporary loss of crosspoint information or data. Audio and data from a
failed node will not be available to the remaining nodes for the duration of the
failure. When a ring with non-adjacent failures sub-divides into two sub-rings,
audio and data from the failed nodes will not be available to the nodes in either
sub-ring , audio and data will continue to be available to nodes within the same
sub-ring but data may still be available to all nodes that are still functioning if
there is an intact, independent Ethernet connection to those nodes.
If a Matrix frame, connected as a node of the fiber-optic link is reset, powered
down or failed this will constitute a lost or failed node on both rings and this
node will experience audio breaks or disturbances and loss of crosspoint
information or data for up to 5 seconds after the fault condition is cleared or
repaired.
Single Card Set Redundant System - Fiber Redundancy
In all fault cases involving cable faults or loss of nodes on the ring the
remaining nodes may experience audio breaks or disturbances and loss of
crosspoint information or data. When a ring with non-adjacent failures
sub-divides into two sub-rings, audio and data from the failed nodes will not be
available to the nodes in either sub-ring , audio and data will continue to be