Installation guide

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Communication Connections
EDS-308 models have 6, 7, or 8 10/100BaseT(X) Ethernet ports, and 2, 1, or 0
(zero) 100 BaseFX (SC-type connector) fiber ports. EDS-305 models have 4 or
5 10/100BaseT(X) Ethernet ports, and 1 or 0 (zero) 100 BaseFX (SC-type
connector) fiber ports.
10/100BaseT(X) Ethernet Port Connection
The 10/100BaseT(X) ports located on EDS’s front panel are used to connect to
Ethernet-enabled devices.
Below we show pinouts for both MDI (NIC-type) ports and MDI-X
(HUB/Switch-type) ports, and also show cable wiring diagrams for
straight-through and cross-over Ethernet cables.
RJ45 (8-pin, MDI) Port Pinouts RJ45 (8-pin, MDI-X) Port Pinouts
RJ45 (8-pin) to RJ45 (8-pin) Straight-Through Cable Wiring
RJ45 (8-pin) to RJ45 (8-pin) Cross-Over Cable Wiring
100BaseFX Ethernet Port Connection
The concept behind the SC port and cable is quite straightforward. Let’s
suppose you are connecting devices I and II. Contrary to electrical signals,
optical signals do not require a circuit in order to transmit data. Consequently,
one of the optical lines is used to transmit data from device I to device II, and
the other optical line is used transmit data from device II to device I, for
full-duplex transmission.
All you need to remember is to connect the Tx (transmit) port of device I to the
Rx (receive) port of device II, and the Rx (receive) port of device I to the Tx
(transmit) port of device II. If you are making your own cable, we suggest
labeling the two sides of the same line with the same letter (A-to-A and B-to-B,
as shown below, or A1-to-A2 and B1-to-B2).