This phenomenon is the result of three reasons: First: the operator (transmission, switching network failure) of the responsibility: the operator must ensure that the quality of the signal to the user (bandwidth, bit error rate, signal-to-noise ratio, transmission rate, signal level, input and output impedance, the stability of the signal, the stability of the input and output impedance) in line with the national standards); Specific Phone: Telecom 10000 Netcom 10060 Tietong 10050 two: the site of the problem: 1: the site server is not stable; 2: the site of the software is not stable; 3: the site operation and maintenance of the quality of the level of low; can not be timely troubleshooting; for example: on the other site is very good, a site is particularly poor, which is the site's own problems with the operator and the user have no relationship. ★ Copyright: This answer for the harmony of the original, no one shall steal! ★ Third: the user (responsibility) the following factors will lead to your current state, if the test of the above operators have no problem, the next, is your user's own problems; if you do not have the following problems, you can directly call the operator, so that the operator to give you at the operator's own related matters. ★Copyright: This answer for the harmony of the original, no one shall steal! ★ The user produces the causes of this phenomenon and treatment methods in the user of each device settings must be correct under the premise: 1: Power supply 1.1 with a multimeter to check whether the power supply is stable?1.2 AC voltage fluctuations in the permissible range? Does it exceed 5% of the rated voltage? 1.3 Is the ripple coefficient (checked with a millivoltmeter) after A/D conversion of the power supply qualified?1.4 Is the temperature rise of the power supply abnormal? 1.5 Does the regulated voltage characteristic meet the technical specifications?1.6 Does the regulated voltage characteristic and ripple coefficient meet the technical specifications under 1.5 rated load?1.7 Does your power supply capacity meet the requirements when replacing a large fan?1.8 Generally, the power supply for auxiliary equipment (routers, network switches, cats, etc.) is a rectified power supply, with no voltage regulating function, and with a large ripple coefficient (probably caused by the drying out of the filtering capacitors), and the Load capacity is also poor; heat resulting in equipment can not work, special attention should be paid to the monitoring of the operation.1.9 Due to equipment over-voltage (like feeding a child, more can be held up), under-voltage (like feeding a child, less will be malnourished), voltage fluctuation is too large (like giving a child to eat, hungry, full of a meal of an indeterminate amount of), over-current, heat, resulting in overheating protection action to cut out of the fault and put the Equipment out of operation (i.e.: will produce slow, delayed, repeated startup, delay, dropout, interruption, disconnection, automatic shutdown, shutdown and other manifestations), etc.; 1.10 power supply overcurrent protection and overheating protection is the correct action? Is the action sensitive? Whether the refusal to act or false action? ★ Copyright: This answer for the harmony of the original, no one shall steal! ★2: Check the network cable and crystal head (R45): 2.1 crystal head and seat is plugged (loose?)? 2.2 contact is good? What is the contact resistance? 2.3 Is there any accumulation of dust? Is it oxidized?2.4 Has the mechanical latch of the crystal head and the seat been latched?2.5 Is the latch firm?2.6 Is the network cable and the crystal head pressed and in good contact?2.7 Insulation resistance between the wires of the network cable (using a 100V rocking meter), should be greater than 20 megohms. ★ Copyright: This answer for the harmony of the original, no one shall steal! ★3: lightning protection, grounding: grounding is mainly to protect the safety of people and equipment! Lightning will burn the network card; serious cases can cause fire and casualties! Multi-point grounding, repeated grounding, nearby grounding is the principle; grounding is divided into protective grounding, shielding grounding, work grounding, etc.; static electricity is the main culprit causing the blue screen of death! I use a noise meter to test not grounded when the noise voltage is greater than the signal more than 6000 times, you do not ground, such a high noise your equipment can work? Grounding is the most basic IT requirements, analog equipment is such, digital circuits is more so, from all aspects of the interference can be reduced or eliminated by grounding, foreign interference and local, local inter-circuit wiring coupling can be reduced and eliminated, do a good job of grounding and shielding of the equipment, a lot of interference from the shielding is not good, grounding is bad, a lot of people are only in the software to do the work, a lot of interference are! Caused by poor grounding or no grounding, this failure is very easy to produce, but also easy to be ignored by many people, many equipment damage and grounding is directly related to the lack of grounding or poor grounding can lead to inter-code interference, misuse of code, delays, packet loss, intermittent, dropped (disconnected, interrupted), dead, card, automatic shutdown, repeated startups, repeat startups, frequent reboots (or repeated with the connection) and other phenomena. Grounding must have more than two grounding electrodes, each grounding electrode between the minimum interval of 10 meters or more, grounding electrodes to the machine room grounding line shall not have any joints, respectively, with a cross-section of not less than 25 square millimeters of soft copper wire introduced into the machine room sink (intermediate is not allowed to have any joints), grounding line and Faraday network symmetrically connected to facilitate shunt dispersal, and the sink to the point of connection to be coated with silver powder conductive paste, each device to the Sink (independent) of the grounding wire cross-section shall not be less than 4 square meters of multi-stranded soft copper wire, sink for each grounding electrode grounding resistance of less than 5 ohms (the smaller the better). At least two or more times a year using a grounding meter (2.5 level or higher grounding meter measurement, and the meter in the scope of the inspection qualification period) to check. When checking the grounding electrode, it is strictly prohibited to do so under thunderstorms. It is strictly prohibited to use the N-zero wire of the water pipe and power line as the grounding use; that is, the independent grounding device. Each device's wire is independently connected to the busbar in the machine room, and it is strictly prohibited to connect the busbar after series connection. I can say very subjectively: whether you are an individual user or a collective user of a large server room, you simply do not have grounding (or grounding is not qualified). ★ Copyright: This answer for the harmony of the original, no one shall steal! ★4: bandwidth: since the operator to the user's bandwidth is very important, there is not enough bandwidth, you can not guarantee enough data traffic; computer Internet access is impossible to smooth; the bandwidth mentioned above refers to the full bandwidth, like on the highway, there is so wide bandwidth, the whole process can not be the phenomenon of undulation; the whole process of the slightest undulation will affect the speed of the network; the user has the right to request the operator (with a sweeping instrument test) Give protection; ★ Copyright: This answer for the harmony of the original, no one shall steal! ★5: signal to noise ratio: (the ratio of signal to noise, can be understood as the purity of the signal) is small, the useful signal is noisy spurious signal cover up no (especially between the code elements of the code between the interference), so that the road to receive the letter can not be correctly extracted to the useful signal in the noisy signal to determine the circuit can not be correctly judged on the code elements, will produce a mis-code, a serious mis-code is the loss of packets, severe loss of packets is the The reason for the delay, serious delay will be the dropout (will produce slow, delayed, repeated start, dropout, delay, dropout, interrupt, disconnect, automatic shutdown, shutdown and other appearances, etc.), the use of noise meter or level meter to measure the level of noise is within the allowable range, or with an oscilloscope to observe the presence of spurious signals? Is there any inter-code interference between codes? Take measures to eliminate. The signal-to-noise ratio should also be greater than 60dB or more. Test (observe) with frequency sweeper and oscilloscope. This indicator is to ensure that the road is flat and free of obstacles. With a road that wide, it also has to be unobstructed the entire way. ★Copyright: This answer is the harmony of the original, no one shall steal! ★6: Matching: Matching includes level Pi matching and impedance matching (with a level meter and signal generator test) 6.1 Level Matching: The receiving signal can not be too low, too low, not up to the threshold level amplitude needed to receive the road, the equipment can not work properly; level is too high will make the receiving road pre-positioning circuits saturated or burned pre-positioning circuits. Receive level fluctuations in the vicinity of the receiving threshold, it will make the computer frequently repeated restart phenomenon; therefore, the receiving level adjustment is very important. Operation should always use a level meter or oscilloscope to monitor and adjust the reception level of the connection in the appropriate amplitude range. According to the manual, monitor and adjust with a level meter. 6.2: impedance matching: the connection point must be done to match the impedance relative, input and output impedance mismatch will lead to reflection attenuation, the signal is strong again can not work properly. ★ Copyright: This answer is a harmonious original, no one shall steal! ★7: Optimize the network structure People open the computer to the Internet will produce garbage as dinner, do not clean up the table, do not scrub tableware, do not clean the stove as will produce computer garbage, the computer will gradually manifested as slow, card, delayed, repeated startups, dropouts and other malfunctions; therefore, I recommend the use of small tools: such as Super Bunny, Optimization Master, LU Master or 360, etc.; to be cleaned up before getting off the line. 7.1: Timely removal of Internet-generated garbage debris and IE cache: As long as you use the computer will produce garbage, not timely cleanup, the more it will accumulate more and more, a long time to not clean up the C disk space will make the operation of the C disk space more and more small and cluttered, and finally gradually slowed down to the death; therefore, regular organization of the operation of the C disk, you can maintain the speed of the computer operation.
7.2: Synchronize the ADSL device first: power down the device and restart it. ★ Copyright: This answer for the harmony of the original, no one shall steal! ★8: software settings and configuration 8.1: commonly used software download software as far as possible to the big official website to download, to do 3 do not install, informal software does not install, P2P (resource-hogging) class software does not install, not commonly used software does not install. Turn off all unnecessary network connections and startup items, such as Xunlei, BT, donkeys, etc.; non-running software should not be placed in the running c disk inside; real-time update patches. Game software to pour formal large-scale website to download, pay attention to whether the software is stable, immature, unstable software will lead to slow, card, crash and other failures, especially some of the public like the game software, some netizens reflect this very strongly, such software, pay special attention to or immediately delete; download software, pay attention to the hooligan software take the opportunity to insert the security of the computer in jeopardy, at any time to give the removal. A lot of acceleration software is mostly with viruses or advertising plug-ins, taking up the resources of your disk. Some game software after the start of the game will be directly T off, come up with unlimited dropouts, restarts and other failures. Protocols: The protocols in the network should also be matched, and mismatch will also cause some failures of the device. Software conflicts will likewise cause delays, card, slow, dead, dropouts, interruptions and other problems arise.8.2: antivirus software and firewall At least one effective and genuine antivirus software and often upgrade the virus database: the firewall is set appropriately (do not be too much, too high, too low), which will result in a number of web pages can not be opened; viruses can make the computer slower, dead, dropouts, card, repeated startup and switching malfunctions. ★ Copyright: This answer is harmonious original, no one shall steal! ★9: temperature, humidity, temperature rise With the prolongation of the boot time, the temperature of the main device and its auxiliary (cats, routers, network switches, etc.) equipment, it will gradually rise, if it can not be quickly emitted, it will be delayed by the - slow - drop ---- dead.9.1: humidity: rainy season or rainy days and its high humidity areas, the insulation between the lines and devices is reduced, the signal level falls, the This leads to computer inter-code interference, mis-coding, delay, packet loss, intermittent, dropped (short or interrupted), dead, automatic shutdown, repeated startup (repeated connection), or unstable work. Humidity accelerates oxidation, resulting in transmission interruptions. 9.2: Temperature (with the arrival of autumn, the previous period of time and the failure caused by high temperatures will be gradually reduced): from the beginning of the boot, the temperature in the gradual increase in the temperature to a certain point, it will be stabilized in the value of this value and the difference between this value and the ambient temperature should not be greater than 25 degrees; due to the semiconductor devices belonging to the computer, the requirements of the device temperature should not be higher than 85 degrees; chip temperature is close to 80 degrees, the chip temperature should not be higher than 85 degrees. degrees; chip temperature close to 80 degrees to take measures to reduce the cat, router, network switches and computer equipment operating environment temperature. If this range is exceeded the computer will produce inter-code interference, error codes, delays, packet loss, intermittent, dropped (disconnected or interrupted), crash, automatic shutdown, repeated startup (frequent connection) and other phenomena. ★Copyright: This answer is a harmonious original, no one shall steal! ★9.3: temperature rise (the difference between the actual temperature of the device and the ambient temperature is called temperature rise) is less than 25 degrees Celsius Temperature has a great impact on the normal operation of the device, especially network switches, routers, computer motherboard chips, network cards, etc. When the temperature rise is large, the device will not be able to run; in particular, the hand-held (also known as laptop) computers, due to the design of priority consideration of the volume of the temperature rise of the heat dissipation is difficult, the most likely to happen! Temperature rise caused by inter-code interference, error codes, delays, packet loss, intermittent, dropped (short or interrupted), crash, automatic shutdown, repeated startup (repeated connection) and other phenomena. Measures are as follows: a: the equipment (refers to: Hubble, cats, routers or network switches, computers, etc.) placed in a safer place for people, the first disconnect the power supply, and then open the box cover of the equipment, the use of air convection to strengthen the contact with the air, for natural heat dissipation;
b: to the equipment to add a miniature fan to increase the convection of air, forcible heat dissipation;
c: if you do IT, I suggest you: after disconnecting the power supply, add heat sinks to the heated parts of the equipment.
d: after the equipment is disconnected from the power supply, use a 3 mm drill bit to drill more holes on the top and bottom of the equipment to strengthen the air convection and improve the heat dissipation conditions; e: the equipment to a ventilated and dry place, it is best to make a (also available on the market for laptops) insulated cooling bracket to support the equipment for natural heat dissipation; f: after the computer is used for a long time, when the silica gel between the CPU and the heatsink dries up, the CPU will be serious heat, will produce packet loss, delay, slow, repeat startup, drop, interrupt, disconnect, automatic shutdown, crash and other phenomena. To avoid this issue, please reapply the silicone rubber to the CPU and return it to normal operation.
g: timely removal of Internet generated garbage debris and IE cache: as long as you use the computer will produce garbage, do not clean up in a timely manner, the more it will accumulate more and more, a long time to not clean up the C disk space will make the operation of the C disk space is getting smaller and smaller and cluttered, and finally gradually slow down until the computer is dead; therefore, the regular operation of the C disk can be organized, can keep the computer running speed.
h: First, let the ADSL device synchronization: power off the device and restart. Frequent Internet users up to six months, to power off and open the device's shell (by the way, check whether the device's internal connections are good, whether the memory stick is loose, the memory stick and card slot contact is good? Are the plug-ins loose? Is the plug tight? The connection point is firm and good contact), clean up the dust inside the device. 10: wiring: wiring process to minimize interference as a principle; require wiring neat and beautiful, strong and weak signals to go separately, high and low-frequency signals to go separately, the wiring is not reasonable will produce coupling between the lines, crosstalk interference caused by the line can not be entangled with each other, it is best to use shielding (shielding layer is reliable and grounded) line, these parasitic interference will make the These parasitic interferences will make the computer signal to noise ratio is reduced and can not identify useful signals, so that it produces inter-code interference, errors, delays, packet loss, intermittent, drop (short or interrupt), crash, shutdown, and repeated startup (repeat connection) and other phenomena. ★ Copyright: This answer for the harmony of the original, no one shall steal! ★11: the motherboard's button battery Battery capacity is not enough or no power, will also not be able to power on or produce other faults. 12: ADSL users: multiplexing computer signals with the telephone line, pay attention to the pickup, hang up, ringing three states of the impact on the computer; due to the computer and the telephone signals are in the telephone line (multiplexing) transmission, the two must provide a certain degree of isolation between the two (greater than 60dbB), Defense to be greater than 60dbB the greater the better), especially some informal words will affect the use of the computer. Thank you for adopting my answer!
Thank you: friend!