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For the MDI-X port of a switch or hub, cross lines are used: 1-3, 2-6,
3-1, 6-2, 4-7, 5-8, 7-4, 8-5.10Base-T/100Base-T (X) pins are defined as
follows:
Note: "Tx ±" refers to send data ±, "Rx ±" refers to received data ±, and
"-" refers to unused data.
6.2 100base-FX / 1000base-FX Ethernet interface
This device provides 100Base-FX or 1000Base-FX SFP slot.
6.2.1 Patch cord classification
According to the transmission mode of light in the fiber, it can be
divided into multi-mode fiber and single-mode fiber. Multimode fiber
has a thick glass core (50 or 62.5μm), which can transmit light in
various modes. However, the high inter-mode dispersion limits the
frequency at which digital signals can be transmitted, so multimode
fibers can be transmitted over relatively close distances (typically only
a few kilometers).
The single mode fiber has a very thin glass core (core diameter, usually
9 or 10μm) and can transmit only one mode of light. Therefore, it’s
inter - module dispersion is very small, and it is suitable for remote
communication. Under normal circumstances, the skin is orange for
multi-mode, yellow for single mode.
6.2.2 Patch cord overview
LC to LC patch cord
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