Compaq Armada V300 Series Reference Manual page 82

2. Plug the opposite end of the cable
wall jack.
standard telephone jacks but are not compatible with analog
devices such as modems. Be sure the modem cable is
connected to a regular analog phone line. Plugging the modem
into a digital line will result in no dial tone and is not
recommended. The modem includes protective circuitry
against the digital lines producing excess current. A warning
buzz will sound briefly when excessive current is detected
during a call attempt, and the attempt is terminated with the
phone line back on-hook.
You can operate the modem with preinstalled or optional
software. To use preinstalled modem software, select
StartÆPrograms. Then,
Select AccessoriesÆHyperTerminal for terminal emulation
and data transfer.
In Windows 95 select AccessoriesÆFaxÆCompose New
Fax.
In Windows 98 or Windows NT 4.0 select RingCentral Fax.
Wall jacks for digital PBX systems may resemble
into a standard telephone