Shulou(Shulou.com)06/01 Report--

There are still some network maintainers of small and medium-sized enterprises, especially small and medium-sized enterprises, who choose to share the same network cable with the telephone line. The author encountered such troubles some time ago. The reason may be that the early network and telephone wiring are not planned in place, so that in the later stage, I want to increase the station (the terminal network port is not enough, and the management brings inconvenience to the network administrator), and the telephone wiring is not well planned. Later, when I want to install the telephone exchange, I found that the telephone line is not covered or incomplete, so the later maintenance and transformation is a bit tricky.

In this way, some network managers (maintainers), for the sake of convenience and saving funds for integrated wiring for enterprises, have neutralized the telephone and the network, choosing the method of sharing a network cable with the telephone line as the solution to the current situation. Of course, in order to avoid post-management and maintenance and troubleshooting considerations, individuals are not recommended to do so.

Let's start with the main topic, in order to save input time, intercept the following content from the Internet for your reference, the method of sharing a network cable with a telephone line.

The network wire and the telephone line share an 8-core twisted pair, and the method is as follows:

Direct connection: both ends are made into T568B or T568A. Used to connect different devices (e. G. network card to switch

Machine).

Cross: one end is made into T568B and one end is made into T568A. It is used to connect the same device (such as network card to network card, such as dual-computer interconnection).

The T568A standard connection order from left to right is 1-green-white, 2-green, 3-orange-white, 4-blue, 5-blue-white, 6-orange, 7-brown-white, 8-brown.

T568B standard wiring order from left to right is: 1-orange-white, 2-orange, 3-green-white, 4-blue, 5-blue-white, 6-green, 7-brown-white, 8-brown.

1 output data (+)

2 output data (-)

3 input data (+)

4 reserved for phone use

5 reserved for phone use

6 input data (-)

7 reserved for phone use

8 reserved for phone use

Thus it can be seen that although twisted pair has 8 core wires, only 4 of them are actually used in the widely used 100-megabit network, that is, 1, 2, 3 and 6, which play the role of receiving and sending signals respectively. As a result, there is a novel production of 4-core network wire, which can also be called 1-3, 2-6 cross-connection method. The core arrangement rule of this kind of cross-network wire is: the first foot of one end of the network wire is connected with the third foot of the other end, the second foot of one end of the network cable is connected with the sixth foot of the other end, and the other feet correspond one by one, that is, the extra four wires are thrown away in the cross cable production method introduced above. There are 8 shrapnel in the 100m network card, four are used for data transmission, and the other four are used to prevent crosstalk. Strictly following the specification can reduce network failure.

◆ PC connection switch

An end: (standard 568B): White orange, orange, white-green, blue, white-blue, green, white-brown, brown.

B end: (standard 568B): White orange, orange, white-green, blue, white-blue, green, white-brown, brown.

● PC with PC

An end: (standard 568A): White green, green, white orange, blue, white blue, orange, white brown, brown

B end: (standard 568B): White orange, orange, white-green, blue, white-blue, green, white-brown, brown.

■ switch connected to switch

An end: (568A): White green, green, white orange, blue, white blue, orange, white brown, brown

B end: (568B): White orange, orange, white-green, blue, white-blue, green, white-brown, brown.

The communication is still white orange, orange, white green, green, that is, 1, 2, 3, 6.

In this way, we found that the four lines of blue, white and blue, white and brown were not used.

Generally use 2 telephone lines, connect the line to the crystal head can be used, so you can also receive two phones, it is recommended to use white brown and brown lines to connect the phone line.

If there is a false death state of ringing into the phone network, generally there is no signal splitter installed, the signal separator is usually brought when installing ADSL, and it is no more than 1 yuan to buy online, so it must be installed before each phone, except for the wireless extension.

It should be noted that the 1000m network must have eight wires working together, so you can dump a phone alone.

Throw a separate line, it is best to throw a separate network cable, that is, it can be used as a backup network cable, can also be used as a telephone line, up to 4 phones can be connected, hehe.

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