1. At the time of renovation, almost every family is faced with redistribution of telephone lines and network cables. The required areas are re-planned and designed. There are generally two types of wiring, slotted wiring, and construction. Because strong or weak electricity cannot go with strong electricity. The root line pipe, that is to say, can not be superimposed construction, so that if calculated according to the actual number of meters occurred, between 25 to 35 yuan per meter, this does not count the price of 150 yuan per panel interface, " When the day comes, you just wait and see! 2 network cabling, and now many friends in the new home decoration, will take into account the multiple set of cable interface, so virtually increase the cost of wiring, listening to some netizens said there are several thousand yuan of light cloth network line of expenditure, I think Question: In today's advanced wireless network technology, are there any practical implications for network cabling? 3. Telephone wiring, many friends in the new home decoration, thought it was very thoughtful, set up more than N phone jacks in the set, and now the digital cordless phone technology has developed to a state of extreme, from the past 900 megabytes of digital cordless phones Has developed to 2.4G or even 5, 8G, digital cordless phones with good stability, strong penetration, the receiving distance is about a few hundred meters and can be developed from a digital cordless phone to today's more than a dozen digital cordless phones The point is that the technology is very mature. In the area of ​​100 square meters, it is necessary to disburse huge amounts of money for n multi-line, n multi-port? 4. Yes, I am not afraid of money. What should I do if I find that the cable cannot be used normally due to various reasons? Use wireless routers, digital cordless phones? What can be solved in a matter of hundreds of yuan? Why must people be hurt? An adsl wireless router with n multiple computers will be 200 yuan. The best wireless network card for PC is about 100 yuan. Notebook comes with it? Some people say that the privacy of the wireless router is not good. All the XPs that I have in mind have settings that are forbidden to share with others. A 2.4G digital cordless phone with two powerful functions was only about 300 yuan. It was about 500 yuan per area. On the 10.6th day, I made a special trip to a specialized market. Without any wiring, the call quality of the cordless phone is far more clear and penetrating than the analog signal, and you still want to put there, there is electricity on the line! 5. Some people here would say: Digital cordless phones have radiation. Confidentiality is not good, etc. I have consulted relevant experts on this issue. Experts say: The mobile phone's transmission power is 100 times that of the cordless phone, and it uses high-frequency transmission. At present, there is no definite scientific basis for whether cell phone radiation will cause harm to humans. However, the tiny power radiation used in digital cordless phones can be ignored. The frequency is really higher than the mobile phone, but its radiation is very small. The size of the radiation is not determined solely by the frequency, but it is related to the size of the transmitted power. The peak transmission power of GSM mobile phones reaches 1W, while the peak transmission power of 2.4G digital cordless phones is less than 100mW. At the same time, the 2.4G digital cordless telephone adopts spread spectrum technology, spreads the spectrum, and the power in the unit band is very small, thereby further reducing the radiation to the human body. Because the cordless telephone is not bound by the telephone line, it is convenient and practical and becomes the first choice for more and more families to purchase the telephone. The cordless telephone is connected to the sub-machine and the sub-machine by means of radio transmission and reception, so that the sub-machine can also communicate. Many consumers are worried about the use of cordless phones after experiencing electromagnetic radiation from mobile phones. Some consumers also put a chip on the receiver to eliminate electromagnetic waves. How much is the radiation of a cordless phone? Does electromagnetic waves emitted by cordless phones affect the human body? It is understood that China’s radio management committee clearly stipulates that the launch power of cordless telephone landline and sub-machines shall not exceed 20 milliwatts, the open call distance shall be approximately 300 meters, and the low-frequency frequency between 45 and 48 trillion shall be used. The transmit power is The radiation produced in the low frequency range is very small and does not have any effect on the human body. In other words, as long as the cordless telephone complies with national standards, that is, a cordless telephone with a national network card will not affect the human body. Whether the mobile phone will have adverse effects on the human body, and there is no conclusive scientific basis, and the microwave radiation generated by the low-power launch of the cordless phone will not cause any impact on the human body, and it is almost negligible. Consumers do not have to worry about it. However, it is worth noting that the purchase of cordless phones should be based on domestic brands with network access certificates, both quality assurance and perfect after-sales service. (Boutique shopping guide / wood white) Here are some of the comments I’ve found on wireless routers, and I’m here to express my high regard for originality. Analysis of Wireless Network Radiation Security Using Wireless Internet Access The mobile phone has been proved to have considerable radiation. If it is used for a long time, it will surely endanger our health. The radiation problem has received widespread attention from the society. Wireless network (WLAN wireless local area network) is certainly radiation, although so far, there is no authoritative test results to make detailed conclusions on the electromagnetic radiation hazard of wireless networks, but the convenience brought by wireless Internet access, wireless communication It is our inability to give up, then its radiation in the end there is no harm? Will it affect our health? How can we avoid weaknesses and can we be completely safe? Radiation is harmful to the elderly, children, and pregnant women During the use of wireless networks, wireless routers, wireless APs and other devices are not emitting radio waves at all times. High doses of electromagnetic radiation will affect and destroy the original biological currents and biological magnetic fields of the human body, causing abnormalities in the original electromagnetic fields in the human body. It is worth noting that different people or the same person have different abilities to withstand electromagnetic radiation in different age groups. The elderly, children, and pregnant women are people sensitive to electromagnetic radiation. Their resistance is weak and should be our key protection. Object. It is best not to allow these people to stay close to wireless transmitters for long periods of time. Wireless network radiation is weak compared to mobile phones The size of radiation mainly depends on the size of the transmit power. According to the regulations of the Radio Management Committee of China, the transmit power of wireless LAN products cannot exceed 10mW, while the standards of other countries are relatively loose. For example, the upper limit of the transmit power of Japanese wireless LAN products is 100mW. Some European and American countries are around 50mW. The products currently on the market generally meet the standards of European and American countries. When the power is high, the mobile phone can reach more than 1W. The transmission power of most wireless routers is also between 50mW and 100mW, and the power of the wireless network card is generally less than 10mW. Replacing high-gain antennas does not increase radiation At present, on the market wireless network products, the gain of the antenna is generally 2dBi and 3dBi. In order to expand the wireless signal, some users like to replace the high-gain antenna. Since the antenna is a passive device, it does not increase its power. No matter how much gain is added to the antenna, it will not transmit more power than 50mw. The transmit power mainly depends on the transmission hotspot, ie, the wireless router and the wireless AP itself, as long as they The power meets safety standards, and everyone can safely replace the high-gain antenna. Mechanism of Radiation Harm to the Human Body Thermal effect: More than 70% of the human body is water. Water molecules rub against each other after electromagnetic radiation, causing the body to heat up, which affects the normal operation of the internal organs. Non-thermal effect: There are weak electromagnetic fields in the organs and tissues of the human body. They are stable and orderly. Once they are disturbed by external electromagnetic fields, the weak electromagnetic field in equilibrium will be destroyed and the human body will suffer damage. Cumulative effect: After the thermal effect and non-thermal effect act on the human body, the harm to the human body has not yet had time to self-repair (usually referred to as the human tolerance --- internal resistance), and if it is radiated by electromagnetic waves again, the degree of damage will accumulate. For a long time, it will become permanently morbid and life-threatening. For groups that are exposed to electromagnetic radiation for a long period of time, even if the power is low and the frequency is low, unpredictable lesions may be induced, which should give rise to vigilance. How to avoid the harm caused by wireless radiation The radiation of the wireless network mainly depends on the transmission power. The closer the radiation to the wireless transmission point is, the stronger the radiation is. Therefore, the wireless routing and wireless AP should be placed far away from people and far from the bedroom. Try to avoid The elderly, children, and pregnant women are in close proximity and prolonged contact with devices such as wireless routers and should switch off their power before going to bed at night. Also pay attention to avoid wireless products too close to audio, television and other electronic devices to prevent mutual interference and produce other radiation. As long as everyone keeps a certain distance and avoids the cumulative effects caused by living in a high-intensity wireless network environment for a long time, and develop good usage habits, there is no problem. No one will use wireless routers on their heads. Conclusion: Wireless Internet access can be used with confidence Through the introduction above, we can completely use the wireless network, enjoy the convenience brought by the wireless, get rid of the shackles of the cable, free Internet access. Although the problem of radiation cannot be completely avoided, we can completely minimize the harm of radiation. 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Here are some of the comments I have made on the experts of cordless phones, and I hereby express my highest respect for originality.
We may wish to compare the cell phone parameters used by everyone with the cordless phones. The mobile phone's transmit power is mostly 2 watts and the frequency is 900 megabytes. The mobile phone's transmit power is 100 times that of the cordless phone, and it uses high-frequency transmission.