Modem
General
A modem is communication device which exchange information via internet. It is either conneced by telephones line or a leased lines. Modem is abbreviation of �Modulator � Demodulator�. It modulates the signal goes from the computer and demodulates the signal coming to the computer. The modem may be internal or external. An internal modem is inserted into the PCI slot which gets power from the computer and the external modem is just like a small box placed on the desk and has its own power cord.
Installation
Installation of external modem:
Before installing the modem turn off the computer.
If desired, connect the cable from telephone to the back of the modem.
Connect the telephone line to the back of the modem. Then connect tetelephone line to the telephone jack on the wall.
Connect the serial cable to the back of the modem. Then connect the serial cable to a serial port at the back of the computer.
Connect the power cable to the back of the modem then plug the power cable into an electrical outlet.
Installation of internal modem:
Turn off the computer and open the cover of system case.
Find out the slot where the card will be installed and insert the card into it.
The computer will automatically detect the modem. If it doesn�t, driver should be anually installed. It is depends on the needs of the user, choosing between an internal and external modem.
Trouble shooting
The modem performing poorly.
The driver for the modem may be a wrong one for that type.
Reinstall the driver. It will certainly eliminate the problem.
The modem can�t establish the connection.
Check the username and password.
Make sure that the telephone cable is connected properly.
If the pulse dialling is not supporting then change it with tone dialling.
Uncheck the check box against the � wait for dial tone. �
The modem is operating very slowly.
It may be possible that there is a traffic at the server-end and it can�t response the request made by the user.
The quality of the line may be poor.