• If you are using speed dial to dial the fax number, the HP Officejet
might be dialing too fast or too soon. To solve this problem, try one
of the following:
– Try manually dialing the fax number from the HP Officejet front
panel, or from an attached phone. For information, see
send a
fax using monitor dialing on page 43 or
send a fax manually
from a telephone on page 43.
– Re-create the speed dial setting and insert some pauses. For
information, see
create individual speed-dial entries on
page 56.
• If your telephone line has a PBX system, make sure you are dialing
the number for an outside line before dialing the fax number.
• The receiving fax machine might be having problems. To check this,
try calling the fax number from a telephone and listen for fax tones.
If you cannot hear fax tones, the receiving fax might not be turned
on or connected, or a voice mail service could be interfering with
the recipient’s phone line.
http://h10032.www1.hp.com/ctg/Manual/c00095626.pdf