QTech QSW-6900-56LF Series Hardware Installation And Reference Manual page 37

Installation Manual
7. Appendix A Connectors and Connection Media
2) At the outlet end of the device, place the wire separately and ensure parallel cabling.
Most of the crosstalks happen within the 20 m started from the outlet end of the device, so
it is suggested not to bind up the wires within the first 5 m-20 m.
3) Bind CAT6A unshielded wire every 50cm-70cm when the wires need to be bound. Bind
CAT6 unshielded wire every 160cm-180cm as loosely as possible.
4) The suggested number of wires in a bundle is not more than 12.
5) CAT6 wire connector is replaced with CAT6A wire connector.
The 1000BASE-T complies with IEEE 802.3ab standard, and uses up to 100m of 100-ohm CAT5,
CAT5E or twisted pairs with higher standard. The 1000BASE-T port uses four pairs of wires for
transmission, all of which must be connected. Figure A-1 shows the connection of the twisted
pairs used by the 1000BASE-T port:
Figure A-1 Four twisted pairs of the 1000BASE-T
In addition to the above cables, the 100BASE-TX can use up to 100m of 100-ohm CAT5. Figure A-
2 shows the definition of pin signal concerning the 100BASE-TX:
Figure A-2 Definition of pin signal concerning the 100BASE-TX
Pin
1
2
3
6
4, 5, 7, 8
Figure A-3 shows the feasible connections of the straight-through and crossover twisted pairs of
the 100BASE-TX.
Socket
Input Receive Data+
Input Receive Data-
Output Transmit Data+
Output Transmit Data-
Not Used
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Plug
Output Transmit Data+
Output Transmit Data-
Input Receive Data+
Input Receive Data-
Not Used
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