Clear-Com HX System Frames - Manual (Page 87)

7.4 Simplex fiber cabling
7.4.1 Single card set redundancy
In this scenario, each matrix contains one fiber-optic Linking card set
(see
Figure 28: Ring topology: single card set redundancy ).
This approach still affords fiber connection redundancy since each rear card houses two
fiber-optic transceivers.
Note:
In the absence of an Uninterrupted Power Supply (UPS), this configuration will not protect
against loss of the node or the matrix itself.
Figure 28: Ring topology: single card set redundancy
87 Eclipse HX-Delta User Guide