Compaq Armada 1700 Reference Manual page 73

After setting up your software, you are ready to start using your
modem. In most cases, if you are using communications and fax
software, the modem will be controlled by the software and you
will not need to use the AT command set. Simply select the
internal modem as the preferred communication device in your
application.
The maximum connection speed on a call is determined by
the speed of the slowest modem on the connection. Your modem
will automatically negotiate the fastest possible speed with the
remote modem.
The internal modem is configured to meet operating approval in
the country where you purchased your computer. If the modem is
used in other countries during travel, the country selection setting
for the modem needs to change to meet the telecommunications
regulations for that country.
The Country Select Application (CSA) lists all of the countries for
which the modem contains configuration information. To confirm
that the modem has been approved for use by the
telecommunications agency in the desired country, check the
approvals label on the bottom of the computer. Or, for the most
up-to-date information, refer to the Compaq Internet website at
www.compaq.com.
The internal modem supports specific countries that are
included in the selection list.
If you are running Windows 95 or Windows 98:
1. Click Start Æ Settings Æ Control Panel Æ double-click the
System icon.
2. Click the Device Manager tab.
3. Double-click modem icon, then double-click your modem.
4. Click the Country Setting for Modem tab, then select the
country from the List of Countries.
5. If you are traveling, click the Change Country button. While
traveling, you will be asked to confirm this setting at each
reboot. If you have permanently relocated to the country, click
the Home Country button, then click the Change Country
button.
6. Click Yes to confirm your country selection.
7. Click Yes to restart your computer.