Rj12 vs Rj25: Difference and Comparison

Rj11 and Rj12 are generic telecommunication network interface which connects long-distance or local exchange with voice and data communication. There are lots of registered jacks, and they are used for different purposes.

Key Takeaways

  1. RJ12 connectors have six positions and six contacts (6P6C), while RJ25 connectors have six positions and three contacts (6P3C).
  2. RJ12 connectors are commonly used for telephone systems and data communications, whereas RJ25 connectors are used mainly for three-line telephone systems.
  3. RJ25 connectors offer a more compact solution for multi-line telephony applications, while RJ12 connectors provide broader compatibility with various devices and systems.

Rj12 vs Rj25

Rj12 is a telecommunication network interface which connects long-distance or local exchange with voice and data communication. It has six slot connectors. Rj25 is the smallest, but one of the most powerful connectors. It has a 6P6C configuration and is able to connect six cables simultaneously.

Rj12 vs Rj25

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Rj12 has three pairs of copper strands, allowing information exchange on three different lines. RJ12 has six slot connectors, and it is visible.

When compared to the size, Rj25 is smaller than Rj12, but it is powerful as well. It is square in shape and it is lightly weighted, and they are used in telephone and network communication.

 Comparison Table

Parameters of ComparisonRj12Rj25
Physical characterRj12 is big in size, and it is compact and square-shaped.Rj25 is small in size, and it is small and square-shaped.
UsesIt is used mostly in systems and phones for contact.It is used in telephone devices for contact.
ConfigurationRj12 configuration is 6P2C.Rj25 configuration is 6P6C.
ConnectorRj12 is used to connect one computer.Rj25 is used to connect three computers simultaneously.
WeightIt is slightly heavy than other registered jacks.It is light.

What is Rj12?

Rj12 is a registered jack that is light and is totally made up of plastic. The wires inside it are visible from the outside. It is mostly seen in computers and laptops for their data connection and near DVD trays on personal computers.

The connector used to connect Rj12 is a six-slot connector. It is mostly used in the connectivity of telephone lines in companies and in many places.

There are Rj12 telephone systems and PBX, and most of the PBX offers phone tracking and many more features that the Rj12 key systems don’t.

The Rj12 is available on many machines for data connection and call connection. It is lightly weighted and used for multipurpose.


What is Rj25?

Rj25 is the smallest, but it is one of the most powerful connectors, and we should not underestimate it. The material is displayed as ties using translucent plastic.

It has a 6P6C configuration as it is able to connect six cables simultaneously, and it can also be connected to three computers simultaneously. It is thin and small, and it is lightly weighted.

The pros of Rj25 are that it can accommodate up to six wires at a time. The prototype machine has two boxes: a microcontroller and a power controller. An IR cable is also attached to it. The Rj25 is more powerful and long-lasting.

Rj25 is compact and round, and lighter when compared to Rj12. It is covered with gold as it prevents rust. Rj25 has six slot plugs and can be connected to different computers. RJ25 jacks are used in telephone systems and used in networking connections for communications, and Rj25 is a six-slot plug.

Main Differences Between Rj12 and Rj25

  1. Rj12 has four slot connectors, and Rj25 has a plug of six slots.
  2. Rj11 is compact and square in shape, and Rj25 is rounder, lighter and more compact.
  1. https://www.leadsdirect.co.uk/technical-library/pinouts-wiring-diagrams/what-is-the-difference-between-rj10-rj11-rj12-and-rj45-connectors/
  2. https://www.mouser.in/Connectors/Modular-Connectors-Ethernet-Connectors/_/N-5g3y?P=1yzvt47

Last Updated : 13 July, 2023

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