CRS4F100 RS-485 to Fiber
| Parameter | Associated MIB variable | Description |
| BIA | crs4f100BiaIndex(1) | See BIA and Slot |
| Slot | crs4f100SlotIndex(2) | See BIA and Slot |
| Group Membership | crs4f100Groups(3) | See Configuration Management |
| Marketing Revision | crs4f100MRevision(4) | Marketing Revision |
| Config Match | crs4f100CfgMatch(5) | Configuration Management match? |
| Serial Number | crs4f100SerialNumber(6) | Serial Number reported by hardware |
| Fiber Connector | crs4f100ConnA(7) | Fiber Connector Type reported by device |
| Copper Connector | crs4f100ConnB(8) | Copper Connector Type reported by device |
| Fiber Link | crs4f100FiberLink(9) | Link status of Local Fiber Port |
| Fault | crs4f100Fault(10) | Fault status reported by local device |
| Firmware Revision | crs4f100FirmwareRevision(11) | Firmware Revision reported by local device |
| Local Copper Activity | crs4f100CopperActivity(12) | Receive Activity on the local copper interface |
| Cache Clean | crs4f100CacheClean(13) | Configuration changes pending? |