Media5 Mediatrix 3308, Руководство по установке оборудования

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Appendix B - Cabling Considerations RJ-45 Cable
36 Mediatrix 3300 – Analog Gateway
Straight Through Cable
A RJ-45 straight through cable is used to connect a computer to a network device. For instance, you must use
straight through cables to connect a computer to a network hub, switch, and router.
The RJ-45 cable uses two pairs of wires: one pair for transmission and the second pair for reception. It is wired
so that pins 1 & 2 are on one twisted pair and pins 3 & 6 are on a second pair according to common wiring
standards which meet the EIA/TIA T568A and T568B requirements.
Figure 14: Straight Through Connectivity
Pin Name and Function
The following is the function of each pin in a RJ-45 cable.
Table 16: RJ-45 Pinout Information
Pin # Function
Colour Coding
EIA/TIA 568A
EIA/TIA 568B
AT&T 258A
1 Tr White with green stripe White with orange stripe
2 Transmit - Green with white stripe or solid green Orange with white stripe or solid orange
3 R White with orange stripe White with green stripe
4 N/A Blue with white stripe or solid blue Blue with white stripe or solid blue
5 N/A White with blue stripe White with blue stripe
6 Receive - Orange with white stripe or solid orange Green with white stripe or solid green
7 N/A White with brown stripe or solid brown White with brown stripe or solid brown
8 N/A Brown with white stripe or solid brown Brown with white stripe or solid brown
Table 17: Pin Name and Function
Pin # Name Function
1 Transmit Data Plus Positive signal for the TD differential pair. This signal contains the serial
output data stream transmitted onto the network.
2 Transmit Data Minus Negative signal for the TD differential pair. This contains the same output as
pin 1.
3 Receive Data Plus Positive signal for the RD differential pair. This signal contains the serial
input data stream received from the network.
4 not connected
5 not connected
6 Receive data minus Negative signal for the RD differential pair. This signal contains the same
input as pin 3.
7 not connected
8 not connected
Pin 1
Pin 2
Pin 3
Pin 6
Pin 1
Pin 2
Pin 3
Pin 6