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Types of modems


The speed of the modem

The modems of: 55.600 bps?

The communications norms

The internal speed PC - modem

The commands Hayes

The UART

The RDSI

Updated page
7/3/2000


Author:
Juan Herrerķas Rey
 

To install a modem


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What is... a modem?


 

The communications norms

The data transmissions by telephone route are based on a series of international standards that must fulfill the devices involved in the communication. Every norm defines a series of such parameters that allow the correct communication at a certain speed.

This way, when it is said that a modem expires with the norm "V.34", it means that it is a modem that fulfills a such series of specifications that allows him to communicate with modems of this speed (and usually of any speed lower than that one). The most important norms are:

Norm

Explanation

Maximum speed (bps)

V.22bis