A twisted pair wire connection network and telephone

Recently, I found a popular post in the small series wandering forum on the topic of discussing a twisted pair wire connection network and telephone, how to allocate the crystal head and module line sequence? Such a common post attracted thousands of clicks, and there were dozens of users replying to the post. Some people mentioned in the post that 1, 2, 3, and 6 in twisted pair wires are used for network transmission, and 4 and 5 are used for voice transmission. It is said that this method can be used normally. Is it actually okay?

Most netizens said that this method can be used temporarily, but this method is not supported. Xiao Bian believes that this can only solve the problem of temporary shortage of information points and cannot be used as a regular wiring method for a long time. Otherwise, the following problems may occur:

1. network speed slows down

Without a doubt, the network speed will definitely slow down, but to what extent? Xiaobian's friends once tested the cat5e line, and the data showed a speed drop of about 10-15%. If a filter is connected to a signal filter, the speed is relatively reduced to about 5%. Especially in calls, the network speed will be greatly slowed down, and the network cable resistance is different from the telephone line resistance. If the network cable resistance is acceptable within 10 meters, the impact of long distance will be even greater.

2. Phone interference

The phone may be disturbed during a call. problems such as unclear sound, loud noise, and low volume may occur. Although only four network transmissions are used, the other four are used to prevent near-end crosstalk. If they are used for telephone speech, not only are network crosstalk problems serious, but the quality of voice transmission is also affected, if lines 4, 5, 7, and 8 are used to connect two telephone lines, the interference problem becomes more serious.

3. Unable to detect

This type of line cannot pass the tester test, and once a problem occurs in the next network operation, it cannot be quickly detected and repaired.

4. The network bandwidth cannot be upgraded.

Today's IT products are changing with each passing day. Gigabit NICs and switches are everywhere. If you connect the phone to the network in this way, it is difficult to connect to a gigabit Nic or a switch.

Obviously, this does not comply with the standards and cannot pass the detection. However, according to replies from netizens, about 50% of netizens have had such experiences. The reason is that many netizens are not fully considered before installation. cables are embedded in the wall and cannot be pulled later. This is actually a helpless move. However, in reality, many engineers use this method to tell Party A to save money and practice it for a long time!

From the cost point of view, the selection of this method is cheaper, but most netizens choose this method for wiring only for convenience. In fact, if it is not a large project, it will not save a lot of cost. However, we recommend that you use regular cabling to ensure high quality, high speed, and anti-interference.

1. Production specifications and connection rules of twisted pair wires in the Network
2. Network twisted pair Cable troubleshooting instance