Clear-Com HX System Frames - Manual (Page 88)

Figure 28: Ring topology: single card set redundancy
Loss of single fiber connection
If a single fiber connection is lost on one ring and the other ring is intact then the active ring
always attempts to heal itself by reversing the direction of data flow to bypass the failed
connection. If the extent of the failure is such that the active ring is unable to heal itself then
the system will switch to the secondary ring.
The self healing mechanism is performed automatically by the Fiber Linking Card whereas
the switch-over between redundant cards and rings requires software or operator
intervention.
Switching to the secondary ring will cause audio breaks or disturbances and momentary loss
of crosspoint data.
If a single fiber connection is lost on both rings the nodes adjacent to the failures will loop-
back their connections to the failed cables healing the rings and the most intact ring will be
used.
Note:
The configuration software (EHX) will report any failures in the fiber connection system.
88 Eclipse HX-Omega User Guide