Compaq Armada M300 Series Reference Manual page 167

The equipment is designed to work with all EU telephone
networks. However, the equipment may have interworking
difficulties for some connections on the EU public networks.
Dialling by loop disconnect pulses is not intended to be used on
the PSTN. This feature is only supported in consideration of PBX
or other equipment which requires pulse dialling.
This device is designated to work with DTMF (multifrequency
tone) dialling. Dialling by loop disconnect pulses (pulse dialling)
is not intended to be used on the PSTN. This feature is only
supported in consideration of PBX or other eqipment that requires
pulse dialling.
Network compatibility is dependent on software switch settings
which are set automatically by the country selection. The user
should contact the equipment supplier in case of difficulty in
network settings.
Use the Country Select Software supplied with the product to
configure your modem for the country in which you are currently
located. Selecting a country other than the one in which you are
currently located may cause your modem to be configured in a
way that violates the telecommunication regulations/laws of that
country. In addition, your modem may not function properly if the
correct country selection is not made.
The Compaq PP2050 notebook computer is suitable for various
business applications when traveling. The unit is not designed for
continuous office use. When operating the PP2050 notebook in an
office environment, we recommend you use the unit in
conjunction with a docking base and external keyboard.
Always follow these basic safety precautions when using a
modem or telephone that is not cordless.