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2.5 Making UTP Connections
The 10/100/1000 twisted-pair copper port supports 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 UTP Cat. 5, EIA/TIA-568B 100-ohm
1000BASE-T: 4-pair UTP Cat. 5 or higher (Cat.5e is recommended), 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 is connected, the ports can sense the receiving pair automatically and
configure itself to match the rule for MDI to MDI-X connection. It simplifies the cable installation.
Auto-negotiation Function
The port is 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 port will sense the speed and use
half duplex for the connection.
2.5.1 UTP Configuration DIP Switches
For making proper connection to an auto-negotiation INCAPABLE device, it is suggested to set port
configuration to one of non-auto (forced) operating modes and specify speed and duplex mode which
match the configuration used by the connected device. Any change of DIP SW1~SW3 setting will take
effect immediately even when the device is in operation.
DIP SW (switches) SW1, SW2, SW3
SW1
SW2
SW3
OFF
OFF
OFF
OFF
OFF
ON
ON
OFF
OFF
ON
OFF
ON
ON
ON
OFF
ON
ON
ON
Auto: Auto-negotiation enabled
*: auto-negotiation disabled
Mode
Auto 10/100/1000 FDX/HDX (Factory default)
Fixed 1000M FDX *
Fixed 100M FDX
Fixed 100M HDX
Fixed 10M FDX
Fixed 10M HDX
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