Advice 1: How to check phone line quality

Before connecting your ADSL Internet you need to begin to check whether your telephone line to provide high-quality communication, then you haven't sinned on the provider and the failure of the computer.
How to check phone line quality
You will need
  • computer;
  • modem;
  • is a telephone line.
Instruction
1
To determine the quality of the connection on your telephone line, connect the computer modem, for example, D-Link DSL 2500U/BRU/D. If your modem is connected as bridge, go to properties of LAN and enter the IP address of the modem as shown in the image. If you do not, you will not be able to communicate with the modem to verify the telephone.
2
Click on the link http://orencode.info/forum/attachment.php?attachmentid=100&d=1266438205 to download the app to test phone lines. To download sign up on the forum, this is standard procedure, it will not take you much time. Unzip and install the program on your computer. Connect the telephone cable to the modem and turn it on. Then start the app DLink Line Info.
3
Enter in the program window the IP address of the modem, then click the "Update" button to take readings of the characteristics of the line. The more the testimony of the charts in the results of measurements build the program, the better your phone lines. You can also make conclusions about this from a report program. Look for the following characteristics: Noise Margin (noise immunity) and Attenuation (signal attenuation).
4
Assess the value of noise immunity, if it is less than 6, then the line is very bad, it has problems with synchronization. The value of this parameter from 7 to 10, it can fail. From 11 to 20 line good. If the indicator 21 and over – line is very good, interference will not.
5
Then look at the parameter of the attenuation of the signal if it is less than 20, then your line is great. Normal rate – from 20 to 40. If the value is between 40 and 50, on lines there will be failures. Occasionally it will disappear sync, if the figure is between 50 and 60. If it is above 60, the equipment will not work.

Advice 2: How to check the quality of communication

When connecting computers in a local network involves many components: cable twisted pair with connectors on them, switches, network cards in computers and computers with installed software.
How to check the quality of communication
Instruction
1
All these components can influence the quality of communication. To test the connection, there is a simple way. Start a command prompt. To do this, go to the menu Windows "start" button in the corner of the screen. Then expand the "Standard" and find the shortcut to run command line utilities and click on the icon with the mouse.
2
Then type ping [ip address of the computer on the network] to check the quality of communication in the area. If you need to check the connection quality of the Internet connection, after the operator ping, enter the name of your Internet address, for example, mail.ru. More information about the quality of the connection provides a command traceroute [ip address] and enter the computer sends a request to the website rinotel.ru and displays the following information: the number of moves your node names and IP addresses, as well as information about the packet delay.
3
If the connection in the local network is unstable, check the quality of the twisted pair cable by using a special tester. Depending on the model you will receive information about the wiring diagrams of the cables on the nearest available ports, the availability of food and other characteristics.
4
There are special online services which allow you to get full information about your Internet connection: your external ip address, the number of nodes, speed parameters, etc. As a rule, similar services exist even on the Yandex website. In this case, all the information is free. The quality of the connection can also be verified using the standard software. If you have a USB modem. Open the program with which to connect. Next, click on the "Statistics" tab and view the connection speed at the moment.
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