RJ11 RJ12 Circular Female Jack Panel Mount

ADAPTER M22 RJ11 RJ12  BUCHSE 

Panel Mount Coupler, RJ12 Socket - RJ12 Socket 

RJ11 RJ12 Female Feedthru Panel Mount Connector

Connector circular panel mount receptacle female RJ11 RJ12 

The name of the crystal head of the network cable is as follows:

1. RJ-45

Both ends of each twisted pair are connected to network cards and hubs (or switches) by installing RJ-45 connectors (commonly known as crystal heads).

The RJ-45 plug is a plastic connector that can only be inserted in a fixed direction and automatically prevents falling off. Both ends of the twisted pair must be installed with this RJ-45 plug in order to be inserted into a network card (NIC), hub (Hub) or Network communication is carried out on the RJ-45 interface of the switch.

2. RJ11

The RJ11 interface is very similar to the RJ45 interface, but only has 4 pins (8 for RJ45). In computer systems, RJ11 is mainly used to connect modems. In daily applications, RJ-11 is commonly found in telephone lines.

3. CAT6A

CAT6A crystal head is divided into non-screen integrated type, non-screen split type, shielded integrated type, shielded split type, etc.

4. RJ12

There is also a RJ12 that is usually used for voice communication, the structure is the same as the first two, but there are six pins (6p6c). At the same time, there are two types of six-slot four-pin (6p4c) and six-slot two-pin (6p2c).

The standard RJ45 is 8 pins, which is matched with a twisted pair network cable with RJ45 Plug. RJ11/RJ12 is 4 pins or 6 pins. The line with RJ11/RJ12 Plug is matched with RJ11/RJ12, and the common one is telephone line.

6P4C: There are 6 slots on the crystal head, but only the middle 4 slots have copper cores. This kind of crystal head is larger, usually called: RJ12 crystal head. In addition to 6P4C, there are also 6P6C ones.

4P4C: There are 4 slots on the crystal head, and all 4 slots have copper cores. This kind of crystal head is smaller, usually called: RJ11 crystal head. In addition to 4P4C, there are also 4P2C.

2. Different uses 

Generally speaking, the phone crystal head generally refers to 4P4C (applicable to the PBX) or 4P2C (applicable to ordinary telephones).

There are also 2P2C phone crystal heads that are very rarely used. Commonly used crystal heads are RJ45 (8P), RJ12 (6P), RJ11 (4P)