Adaptive Mode
The AC4455 comes in default setting with all dip switches set to OFF. In this mode the media converter is set to “Adaptive Mode”. In this mode only 10Gbps SFP+ transceivers can be used. The ethernet port on the media converter is in auto negotiate mode and will work in 100/1000Mbps and 10Gbps network environments.
Bypass Mode
Other uncoded SFP transceivers can be used. AC4455 supports 1.25Gbps / 2.5Gbps / 5Gbps and 10Gbps SFP transceivers. When not using a 10Gbps SFP+ transceiver, the AC4455 needs to be set in “Bypass Mode” (dip switch 1 and 3 ON).
Note: Fiber port rate and Ethernet port rate must match. When a 1.25G SFP is used then the Ethernet port must be 1.25G or 1G. When using a PC it can be necessary to manually set the Ethernet port at a fixed speed and not use Auto-negotiation.
LFP Mode
Fiber LFP (Link Fault Pass-through) test mode is an important feature in fiber optic networks that allows efficient troubleshooting and maintenance. When enabled, the LFP test mode helps quickly identifying the location of faults or issues within the fiber link.
In this mode, the fiber optic equipment continuously monitors the link for any disruptions or abnormalities. If a fault occurs, such as a break or loss of the fiber signal, the LFP test mode automatically passes the fault information to the appropriate network device.
To activate the LFP mode on the AC4455, dip switch 1 needs to be set to ON.
LFP can only be used in “Adaptive Mode”.
Indicator LED explanation when in LFP mode
10G Indicator LED
The 10G led will only be ON when the UTP port is connected to a 10G network. When the UTP port is connected to a network that doesn't support 10G, the led will stay off.