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3. Making LAN Connections
3.1 Making Copper Port (RJ-45) Connections
The copper ports support the following connection types and distances:
Network Cables
10BASE-T: 2-pair UTP Cat. 3,4,5 , EIA/TIA-568B 100-ohm
100BASE-TX: 2-pair / 4-pair UTP Cat. 5, EIA/TIA-568B 100-ohm
Link distance: Up to 100 meters
Auto MDI/MDI-X Function
This function allows the port to auto-detect the twisted-pair signals and adapts itself to form a valid
MDI to MDI-X connection with the remote connected device automatically. No matter a straight
through cable or crossover cable connected, the ports can sense the receiving pair automatically and
configure self to match the rule for MDI to MDI-X connection. It simplifies the cable installation by
using only straight-through cables.
Auto-negotiation Function
The ports are featured with auto-negotiation function and full capability to support connection to any
Ethernet devices. The port performs a negotiation process for the speed and duplex configuration with
the connected device automatically when each time a link is being established. If the connected device
is also auto-negotiation capable, both devices will come out the best configuration after negotiation
process. If the connected device is incapable in auto-negotiation, the switch will sense the speed and
use half duplex for the connection.
3.2 Making Fiber Connections
The fiber ports operate on 100Mbps and full duplex. For different fiber connections, several alternative
models can be selected for different fiber connections. The following figure illustrates a connection
example between two SC fiber ports:
A variety of fiber options and the associated optical specifications are provided as listed in
Appendix-1.
Network Cables
Multimode (MMF) - 50/125, 62.5/125
Single mode (SMF) - 9/125
16/20