TA7104 /7108 Hardware Installation
155/1531-ANF 90114 C 2017-03-08
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APPENDIX B - CABLING CONSIDERATIONS
This Appendix describes the pin-to-pin connections for cables used with the TA7104/7108.
Warning:
To reduce the risk of fire, use only No. 26 AWG or larger telecommunication line cord.
6.1
RJ-45 CABLE
The RJ-45 connector is commonly used for network cabling and for telephony applications. It is used
to wire both ends identically so the signals pass straight through. RJ-45 cabling is also known as
Twisted-pair Ethernet (TPE), Unshielded twisted pair (UTP) and 10/100 Base-T.
Figure 6:
RJ-45 Cable
When connecting an Ethernet cable to the TA7104/7108, use a standard telecommunication cord with
a minimum of 26 AWG wire size. It is possible to use either a crossover or straight Ethernet cable to
connect in the Ethernet connectors. These connectors perform automatic MDI / MDIX detection,
meaning that they adapt to the type of cable connected to them.
The auto MDI / MDIX feature works only when the connectors are configured in auto detect mode,
which is the default mode.
Whenever you force the TA7104/7108 to use a specific Ethernet mode (for example 100 Mb Full
Duplex), the type of cable to use depends on the other peer. For example, a straight cable is required
to connect the TA7104/7108 to a hub or a switch, while a crossover cable is required to connect the
TA7104/7108 to a PC.
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.
Table 10: 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
