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2.7 Making UTP Connections
TP Port Configuration
Use management function to set the required TP port configuration. It is recommended to set the
highest ability for the TP ports as follows:
Auto-negotiation = enabled
Speed = 100M
Duplex = Full
This is appropriate to support connection to almost every Ethernet device including any which is
not auto-negotiation capable.
Cables
Depending on the connection speed, use the appropriate UTP cables for the connections as
follows:
Speed
Cables used
Distance
100M
Cat. 5, 5e, or higher grade
100 meters
10M
Cat. 3, 4, 5, 5e, or higher grade 100 meters
Auto-MDI-X Function
An auto-MDI-X function will automatically detect if a crossover is required and make the swap of
Tx pair and Rx pair internally. With this function, straight-through cable can be used for any
connection. MDI to MDI-X connection rule is not necessary anymore. In the switches, all TP ports
are equipped with this function. You can use just straight-through type of cables for all your
connections.
2.8 Making Fiber Connection
For different fiber connections, several alternative models can be selected for different fiber
connections as follows:
Model
Connector
Cable
Max. Distance*
S70553M
ST
MM
2 Km
S70554M
SC
MM
2 Km
S70555M-2
SC
SM
20 Km
S70555M-5
SC
SM
50 Km
S70555M-7
SC
SM
70 Km
*: The maximum distance connecting to a full duplex device
The recommended multimode fiber is 62.5/125mm and 9/125mm for single mode fiber. The following
figure illustrates a connection example between two SC fiber ports:
