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User’s Manual 4-29
Operating Basics
This feedback occurs repeatedly and causes a very loud, high-pitched
noise. It is a common phenomenon that occurs in any sound system when
the microphone input is output to the speaker (throughput) and the speaker
volume is too loud or too close to the microphone. You can control
throughput by adjusting the volume of your speaker or through the Mute
function in the Master Volume panel. Refer to your Windows documentation
for details on using the Master Volume panel.
Modem
This section describes how to connect and disconnect the internal modem
to and from a telephone jack.
Region selection
Telecommunications regulations vary from region to region, and you will
need to make sure the settings of the internal modem are correct for the
region in which it will be used.
To select a region, follow the steps as detailed below:
1. Click Start -> Control Panel. Select Large icons or Small icons in
View by.
2. Click Phone and Modem.
3. In the Dialing Rules tab, select a location from the Locations list and
then click Edit.
■ Connection to any communication line other than an analog phone line
could cause a computer system failure.
■ Connect the built-in modem only to ordinary analog phone lines.
■ Never connect the built-in modem to a digital line (ISDN).
■ Never connect the built-in modem to the digital connector on a
public telephone or to a digital private branch exchange (PBX).
■ Never connect the built-in modem to a key telephone system for
residences or offices.
■ Avoid using your computer modem with the telephone cable connected
during an electrical storm. There may be a remote risk of electric shock
from lightning.
Modem functions cannot be used in models which are not equipped with a
modem.
The internal modem can be used only in specified countries and regions.
Using the modem in an area not specified for use may cause a system
failure. Check the specified areas carefully before using it.
When you open Phone and Modem for the first time, a dialog box will be
displayed, prompting you to specify the location from which you will be
dialing.