Select" or "Alternative microphone" and close the open window.

This setting activates the microphone connection on the rear of the PC. (if necessary test as above)

2.8Modem and ISDN card

MODEM

Modem is an abbreviation for "MODulator/DEModulator". The modem is a remote data transmission device, which

•establishes a connection to a remote station,

•converts (modulates) signals coming from the computer into sounds,

•sends these to the remote station,

•and, used on the other end of the line, reconverts (demodulates) the sounds received into machine-recognisable signals.

There are countless standards – protocols – for modems to ensure that they can communicate with one another. These standards are defined by the CCITT (Comité Consultatif International Télégraphique et Téléphonique).

The most recent analog modem standard V.92 was confirmed by the ITU (International Telecommunication Union). Downstream communication is unchanged at 56 kbit/s. The three most important improvements compared to the V.90 standard that is widely used today are:

•Upload at up to 48 kbit/s possible (only 33 kbit/s with V.90)

•Faster connection setup

•Supports the "modem on hold" function. This means that when you receive a telephone call while online, you will be notified. The modem function will be "parked" and you will be

able to return to your Internet function once you have completed your phone conversation.

If you want to use this standard and your modem is compatible with this standard, then find out from your provider whether they support V.92.

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