🔎  RJ11 ➔ RJ45 - Know it all !

an RJ11 to RJ45 adapter
an RJ11 to RJ45 adapter

RJ11 ⇔ RJ45



The telephone cable that arrives at the subscriber is called RJ11
RJ11
RJ11 - Registered Jack 11 - is used for the landline telephone. It is an international standard that is used to connect the landline telephone to the Telecommunications network.
RJ11 uses a 6-slot connector. In it RJ11 has 6 slots (positions) and two conductors, the standard is written 6P2C. The information transmitted on the line can be digital (DSL) or analog. The telephone cable that arrives at the subscriber h
. It has 4 conductors grouped into 2 colored pairs. The socket has 6 physical positions and 4 electrical contacts of which only 2 are used (6P2C).
These 2 central contacts are used for the telephone line.

RJ45
RJ45
RJ45 Registered Jack 45 is also called an Ethernet cable. This cable can be straight or crossed depending on its use, its connections follow precise color codes.
It is the most common cable for network connections for example to the Internet. This type of cable has 8 pins of electrical connections. Its connector is called 8P8C connector (8 positions and 8 electrical contacts). This connector is physically compatible
has 8 positions and 8 electrical contacts (8P8C), this connector is commonly used for network connections, especially to connect computers to the Internet.
wiring RJ11 to RJ45
wiring RJ11 to RJ45

Compatibility between RJ11 and RJ45

All strands of RJ type cables go in twisted pairs along the entire length of the sheath, this technique is used to improve signal quality.

Most wired Ethernet network communications are routed over a Category 5 or Category 6 RJ45
RJ45
RJ45 Registered Jack 45 is also called an Ethernet cable. This cable can be straight or crossed depending on its use, its connections follow precise color codes.
It is the most common cable for network connections for example to the Internet. This type of cable has 8 pins of electrical connections. Its connector is called 8P8C connector (8 positions and 8 electrical contacts). This connector is physically compatible
cable.

Caution : mechanically the RJ11
RJ11
RJ11 - Registered Jack 11 - is used for the landline telephone. It is an international standard that is used to connect the landline telephone to the Telecommunications network.
RJ11 uses a 6-slot connector. In it RJ11 has 6 slots (positions) and two conductors, the standard is written 6P2C. The information transmitted on the line can be digital (DSL) or analog. The telephone cable that arrives at the subscriber h
male connector does not fit into the RJ45
RJ45
RJ45 Registered Jack 45 is also called an Ethernet cable. This cable can be straight or crossed depending on its use, its connections follow precise color codes.
It is the most common cable for network connections for example to the Internet. This type of cable has 8 pins of electrical connections. Its connector is called 8P8C connector (8 positions and 8 electrical contacts). This connector is physically compatible
female connector because of the thick right and left edges.

The RJ45 connector has 8 positions :

position Twisted pair color twisted pair no.
1
I_____I
████
3
2
████
3
3
I_____I
████
2
4
████
1
5
I_____I
████
1
6
████
2
7
I_____I
████
4
8
████
4

The RJ11 connector has 6 positions :

position R/T Twisted pair color twisted pair no.
1 T
I_____I
████
3
2 T
I_____I
████
2
3 R
████
1
4 T
I_____I
████
1
5 R
████
2
6 R
████
3

wiring RJ45 to RJ11
wiring RJ45 to RJ11

Electrical adaptation between RJ11 and RJ45

Position RJ45 Position RJ11 RJ45 wiring number
1
2 1
3 2 7
4 3 4
5 4 5
6 5 8
7 6
8

wiring RJ45 to T or gigogne
wiring RJ45 to T or gigogne

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