1: Environmental conditions:
A: Stable power supply voltage (with auxiliary UPS power supply, if necessary), effective and safe section of the power cord; and in line with the safety of the electricity related to the Insulation regulations; mostly low voltage caused by the smaller diameter of the user line. After the nationwide renovation of the two grids (urban and agricultural), through the monitoring of users (including remote mountainous areas): the user voltage pass rate is at 99.98%, and the voltage into the user is in line with the legal value of the national standard. The grid is using a variety of voltage adjustment means at any time to ensure that the voltage is qualified.
B: dry and ventilated at a suitable temperature (with the addition of a fan or air conditioning system if necessary),
C: smaller dust particle size, walls and their roofs are best treated with paint.
D: . Transmission line appropriate signal-to-noise ratio: (ADSL) subscriber line noise level as small as possible, to avoid interference clutter, so that the equipment can work reliably at smaller levels.
E: Network card problem: Choose a better quality network card.
F: System Software Configuration: Users do not need to set the IP address, the system will be automatically assigned. If you set the DNS must be set correctly. Operating system is WIN98 or ME, in the DOS window, type WINIPCFG to get DNS territory, WINXP system, type IPCONFIG can be.
G: TCP/IP protocol: Users can try to re-add TCP/IP protocol after deleting TCP/IP protocol if they find browsing is not normal.
H: The effect of humidity: rainy season or rainy days and its high humidity areas, due to the conductivity is larger, the conductivity between the lines is strengthened, the signal leakage increases, the attenuation of the signal increases, the insulation of the line is reduced and its line grounding the chances of increasing, which will make the user of the ADSL signal level down, which leads to drop or can not be a stable work. Humidity also accelerates the oxidation of the contact surfaces, and repeated oxidation increases the contact resistance, which can lead to transmission interruptions.
I: the impact of temperature: the use of "cat" ADSL, routers, Hubble, network switches and other users of the Internet: especially in summer, the ambient temperature is high, the cat's temperature also rises, the cat inside the heating element is even hotter; therefore, it is recommended that you:
i-a: the cat to the ventilated and dry place to natural heat dissipation;
i: the cat to a dry place.
i-b: Place the cat in a safe place where people can't touch it, open the lid of the cat's box, and use air convection to strengthen the contact surface with the air to dissipate heat;
i-c: Forced dissipation of heat: install a miniature fan to the cat to increase air convection and forced dissipation of heat;
i-d: If you are an IT person, I suggest you to: Disconnect the power supply, and then give the heated components of the cat a chance to dissipate the heat;
i-m: If you are an IT person, I suggest you to: Disconnect the power supply, and then give the heated components of the cat a chance to dissipate the heat. Afterward, add heat sinks to the cat's heat-generating parts.
i-e: after the cat is disconnected from the power supply, use a 3mm drill bit to drill more holes on the top and bottom of the cat to enhance air circulation and improve heat dissipation;
i-f: after disconnecting from the power supply, open up the shell of your cat to see if it is too backed up by accumulated dust, which can affect heat dissipation, and remove the dust accumulation.
i-g: Synchronize the ADSL cat first: reboot the cat after powering it down.
i-h: The cat ADSL MODEM should be placed in a place with less interference sources. To avoid abnormal operation caused by interference.
2: good grounding system: many machine rooms, equipment grounding is not qualified: not many qualified. All know that grounding is important, are no one to do, individuals are even more unavailable. According to the regulations (electrical installation engineering grounding construction and acceptance specification GB50169-92) requirements: grounding must have more than two "independent" (can not be communal "ground") of the grounding pole, the grounding pole to the workplace of the lead section should be used cross-section Not less than 16 square millimeters of multi-stranded copper wire, the middle does not allow any joints, into the machine room of the grounding wire to their respective "independent" access to the copper row, access point fixing screws should be coated with silver-plated conductive paste, reliably fixed (large rooms should have more than four independent grounding poles, grounding between the copper plate must be used to weld the process, shall not be used bolts) fixed to reduce the contact resistance, the computer room using Faraday grounding cage, cage hole is not greater than 1 square meter, in order to shunt, equalize pressure, shunt). Comprehensive inspection and testing of grounding devices not less than once a year before the onset of thunderstorms, each "independent" grounding pole grounding resistance shall not be greater than 5 ohms. The user line and its user line number line (telephone line or network line) of the shielding layer should be done, into the household immediately grounded, the interference will be reduced to a minimum, to achieve multi-point grounding, do not share with other grounding poles, require "independent" grounding pole; water pipes and electric power (N-wire) ground can not be used as a grounding pole, the grounding can not be entangled, to be The grounding should not be twisted and should be fixed firmly with screws. Lightning: to disconnect (network lines, telephone lines, cut off the power supply, etc.) all contact with the outside world, in order to avoid equipment and personal accidents and fire accidents.
3: the system is clean: people wear clothes does not lie in the grade of the clothes, but lies in whether the clean and tidy; therefore:
A: legitimate running software, upgrade security patches in a timely manner; delete unused files (in order to improve the system's operating speed), clean up the Internet in a timely manner generated by the garbage and regular defragmentation, optimization of the system structure;
B: legitimate and effective The system is designed to be a reliable and efficient antivirus program that automatically upgrades the virus database on a regular basis. Firewalls, ****enabled Internet access software, and network acceleration software are set up appropriately, and improperly configured settings can also affect the user's ability to use the system.
C: Non-running software and other files should not be put into the running disk or desktop (in order to reduce the occupation of the C disk and improve the running speed of the running disk); when you find that there is a phenomenon of dropping out of the line when you open some software, you should immediately close the software and uninstall the software.
D: usually on the computer (including auxiliary) equipment to strengthen the monitoring and operation and maintenance, pay attention to the operation of the light indication and its warning signals, do not expand the accident, nip the problem in the bud, to do: equipment clean, well-ventilated, reliable connection, moderate temperature and humidity, excellent insulation, wiring neat and beautiful.
4: link good: check the host and the auxiliary (keyboard, mouse, speakers, (Category 5 cable) network cable R45 connector, power cord, etc.) must be in good contact to check the household line connectors, telephone line plugs, etc. whether the contact is reliable, in order to reduce the failure of the machine line; cabling: vertical, clear and tidy (to avoid entanglement).
5: poor conditions under the reception level (wireless network card is receiving field strength, optical fiber is optical reception level): signal degradation by the weather, temperature, humidity, distance, transmission on the way to variable interference and other factors, especially the transmission on the way to variable interference is very complex and unstable; therefore, the appropriate reception level is very important in the line of serious interference, the letter mixed worse, the operator should also ensure that the computer receives up and down the line. Operators should also ensure that the computer to receive the upstream and downstream BER (LAN can reach 1/1000000000 - 1/100000000000) should not be greater than 1/1000000 conditions, the receiving level of the upper limit and the lower limit (because the receiving level is too low, the BER should be increased; receiving level is too high, the BER should be increased) within the scope of the; rather than some users often say that Only require bandwidth how many M; this indicator to two-way test, the room and the user to carry out this project between the two-way test, must be qualified to ensure that you have a good operating environment. Users have the right to request the operator in your user terminal with a "BER" and "level meter" to test whether the two indicators are qualified, under the premise of guaranteeing the BER, the upper limit and lower limit of the receiving level, take the level higher than the intermediate value and the upper limit of the level of half of the level, (for example.): Lower receiver level is 0 dB, the upper receiver point is rated at 100 dB, the actual receiver level should be set not less than 75 dB, each direction of the sender branch of the amplifier and the receiver branch of the attenuator with the adjustment) as your receiver level, so that your upstream and downstream have a reasonable signal to noise ratio; if the two directions of the indicators adjusted to qualify the correct equipment set up and a good link to the error-free, your computer upstream and downstream circuits are absolutely no problem.
6: isolation between the computer and the phone (referring to ADSL users):
6-1: ringing computer dropped: is the computer on the ringing signal isolation (should be greater than 60 dB) is not enough, belongs to the computer (strong electricity invasion) problem);
6-2: pick up the computer dropped: is the phone voice loop on the computer signals (shunt attenuation is not) absorbed, is not the computer (strong electricity invasion) problem.
6-2: computer dropout when picking up: it is the absorption of computer signal (shunt attenuation not greater than 1 dB) by the voice circuit of the telephone, resulting in computer dropout, which belongs to the problem of the telephone;
6-3: computer dropout when hanging up (standby): it is the absorption of computer signal (shunt attenuation not greater than 1 dB) by the ringing circuit of the telephone, which belongs to the problem of the telephone.
7: Reminder: theoretically: the use of software to improve your network speed is very slim, in fact, you can not feel it, are generally tools to add advertising. The use of other measures, but also only on your terminal to clear your computer inside some of the garbage, debris, optimize your equipment, thus improving a little bit of your terminal processing speed; as long as you do a good job in the above eight areas of work, you not only now the fault can be eliminated; future days, some inexplicable failures will not arise.
Thank you for adopting my answer!
Thank you: friend!