Compaq Armada 1700 Reference Manual page 156

No dial tone
Troubleshooting
Continued
Phone service is not
connected to the
telephone wall jack.
Phone is connected to
a digital PBX jack.
Verify service from the
local phone company by
the following steps:
1. Unplug the
telephone cable from
the telephone wall
jack.
2. Connect a telephone
to the jack, pick up
the handset, and
listen fo r a dial tone.
If there is a dial tone,
reconnect the
modem to the
telephone wall jack
with the telephone
cable and make sure
all connections are
secure. If there is still
no dial tone, contact
your local phone
company or building
manager.
Plugging the modem into
a digital line will result in
no dial tone. Reconnect
the modem cable to an
analog phone jack, then
reestablish connection.