HP LaserJet 3150 All-in-One Printer series - Manual (Page 236)

234 A Specifications EN
Telephone consumer protection act (US)
The Telephone Consumer Protection Act of 1991 makes it unlawful
for any person to use a computer or other electronic device, including
fax machines, to send any message unless such message clearly
contains, in a margin at the top or bottom of each transmitted page or
on the first page of the transmission, the date and time it is sent and
an identification of the business, other entity, or individual sending the
message and the telephone number of the sending machine or such
business, other entity, or individual. (The telephone number provided
may not be a 900 number or any other number for which charges
exceed local or long-distance transmission charges.)
In order to program this information into your facsimile, please see
“Changing the fax header” on page 122 and “Changing the time and
date” on page 121.