

RJ11 - RS232
The RJ11
RJ11 uses a 6-slot connector. In this one RJ11 has 6 slots (positions) and two drivers, 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 has 4 conductors
is interesting, because the manufacturer has chosen to have a symmetrical arrangement of pins, just like with the systems DECconnect MMJ connector and the RJ45
This cable is also called cable ETHERNET its connector is called 8P8C connector (8 positions and 8 electrical contacts). This connector is physically compatible with the connector RJ11 if an adapter is used. On computer cabling RJ45 in 10/10
in the Yost standard.

RJ11
RJ11 – Regitered Jack 11 – is used for the landline. It is an international standard for connecting the fixed telephone to the telecommunications network.
RJ11 uses a 6-slot connector. In this one RJ11 has 6 slots (positions) and two drivers, 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 has 4 conductors

RJ45
RJ45 - Registered Jack - is the wired standard that allows the network connection for example to the Internet via a box. This type of cable has 8 pins of electrical connections.
This cable is also called cable ETHERNET its connector is called 8P8C connector (8 positions and 8 electrical contacts). This connector is physically compatible with the connector RJ11 if an adapter is used. On computer cabling RJ45 in 10/10
A symmetrical pin layout allows to connect two DTE, data terminal ()) directly without using a modem or other DCE data communication equipment.
The original wiring RS232

RS232
For a serial line information arrive at regular intervals (synchronous) or at random intervals (asynchronous).
Between a transmitter (DTE) and a receiver (DCE) wiring is right. RS232 cables can be connected in series.
In configurations where 2 DTE are directly connected, a cable of cross linking or \Null-Modem\ should be used. This cable has female connectors at each end.
The vast majority of applications RS232

RS232
For a serial line information arrive at regular intervals (synchronous) or at random intervals (asynchronous).
Between a transmitter (DTE) and a receiver (DCE) wiring is right. RS232 cables can be connected in series.
In configurations where 2 DTE are directly connected, a cable of cross linking or \Null-Modem\ should be used. This cable has female connectors at each end.
9 pins RS232

RS232
For a serial line information arrive at regular intervals (synchronous) or at random intervals (asynchronous).
Between a transmitter (DTE) and a receiver (DCE) wiring is right. RS232 cables can be connected in series.
In configurations where 2 DTE are directly connected, a cable of cross linking or \Null-Modem\ should be used. This cable has female connectors at each end.
In mixed applications, a 9-to-25 converter can be used to plug in different sizes.
Two other contacts of signal, RTS and CD are sometimes used when interfacing to modems or RJ11

RJ11
RJ11 – Regitered Jack 11 – is used for the landline. It is an international standard for connecting the fixed telephone to the telecommunications network.
RJ11 uses a 6-slot connector. In this one RJ11 has 6 slots (positions) and two drivers, 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 has 4 conductors
RJ11 | DB9 |
---|---|
1 | 1 |
4 | 5 |
5 | 3 |
3 | 2 |