Advice 1: Why the modem restarts

Each user uses a dial-up connection to access the Internet, sooner or later will face such a problem as the spontaneous rebooting of the modem. This behavior can be caused by a number of reasons.
Why the modem restarts
Most likely, the cause of spontaneous reboots is the increased temperature of the modem. Take the modem in hand and check whether strongly it is heated. Try during work to send to the modem the fan, or put it in a cool place, for example on the window sill.A second possible factor is the lack of voltage. Check the power supply of the modem for damage, check its technical characteristics. Perhaps his power is not enough to supply modem power.A third reason for spontaneous reboot may be outdated modem firmware. Check for current software for your modem on the official website of the manufacturer. If you have an older version installed, please update it.Problems on lines of communication can also affect the modem is not the best way. Line faults can cause conflicts on your modem with the equipment of the provider, with the result that it is possible to observe a spontaneous reboot of the device.The fault of the hardware of the modem may also be the cause of these reboots. Try connecting it to another computer and check. Malicious software (viruses) can also cause a spontaneous reboot of the modem. Check your computer for viruses.It should be noted that an unsuccessful firmware update may cause malfunction of the modem. Before you perform this operation, carefully read the documentation of the modem, and better contact the service center.If the above tips do not help, you should contact the experts.

Advice 2 : Why the modem disconnects

The modem is a sophisticated device used to transmit digital information. If the modem is analog, it converts the original digital signal into an analog pulse, and then a special modulator to change their characteristics – frequency, amplitude and phase.
Why the modem disconnects

That information reached the user, the analog pulses pass through a demodulator, which are converted into the original digital signal. There are different types of modems that perform many functions. These devices are internal and external. Internal analog modem is placed in the computer case and connected directly to the motherboard. An external modem is a separate device that connects to a serial or parallel port and is powered from the mains.

Modems operate according to specific communication protocols, which are divided into several groups. Each group is responsible for certain settings. For example, the first accepts an analog signal and controls the encoding. Second - check coded signal for errors and if they exist it asks for retransmission, or gives an error report. In both cases, the device will shut down and report an error number or a request to reconnect.

For the organization of connection and exchange data between the RAM of the computer and the modem answers the third group of protocols – it specifies certain rules of the team. Knowing the encoding of the transmitted error to understand the cause of the outages. If you connect a new device, leave the default configuration or add configuration as described in the manual.

If when trying to connect, there are periodic errors, you can validate them using the standard commands. For example, the modem is not dialing, error: "No signal, check on the keyboard X3(X0). Keep in mind, the method will be useful only if the device is connected and is in working condition - you hear a long beep, but the dial tone is ignored.

You have seen the condition of a modem, but he passed out before sharing data that could occur due to a very quiet or very short signal the PBX. Try to type the command X2. Keep in mind, if the device does not have the desired sensitivity, a function will not help.

It so happens that the modem is disconnected while checking the user name and computer. View the value of the set timeout period configured for this connection - it is likely too short. To change the value, open "My computer", "Remote access", right-click the connection icon and select properties from the opened menu, find the "settings" button and choose the tab "Connection". Change the numeric value next to the line "cancel the call if not connected within" or uncheck this check box.

Cause of disconnections may be a bad line quality, interference, intermittent attenuation of the signal, the limited data transfer rate. Connection errors are eliminated by configuring the required settings, which are selected in accordance with the guide for the particular modem.

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