Port and Cable Assignments
9
Installation
Verify that all system components have been properly installed. If one or more
components appear to be malfunctioning (e.g., the power cord or network cabling),
test them in an alternate environment where you are sure that all the other
components are functioning properly.
Port and Cable Assignments
RJ-45 Port Description
RJ-45 station ports (all port) can be attached
to any devices which use a standard network interface (e.g., a workstation, server,
bridge or router). RJ-45 daisy-chain ports (all port) can be cascaded to a station port
on similar networking devices (e.g., another switch or hub). Use unshielded
twisted-pair (UTP) or shielded twisted-pair (STP) cable for RJ-45 connections:
100-ohm Category 3, 4 or 5 cable for 10 Mbps connections or 100-ohm Category 5
cable for 100 Mbps connections. Also be sure that the length of any twisted-pair
connection does not exceed 100 meters (328 feet).
Schematics for both straight and crossover twisted-pair cable are shown below
Pin
Assignment
(Station Ports)
Assignment
(Daisy-Chain Port)
1
Input Receive Data +
Output Transmit
Data +
2
Input Receive Data -
Output Transmit
Data -
3
Output Transmit
Data +
Input Receive Data +
6
Output Transmit
Data -
Input Receive Data -
4,5,7,
8
Not Used
Not Used
Straight-Through
Crossover
(Switch)
(Adapter)
(Switch)
(Hub/Switch)
1 IRD+
1 OTD+ 1 IRD+
1 IRD+
2 IRD-
2 OTD- 2 IRD-
2 IRD-
3 OTD+
3 IRD+ 3 OTD+
3 OTD+
6 OTD-
6 IRD-
6 OTD-
6 OTD-
