ZyXEL Communications U-90E, Руководство пользователя

Страница: 109 / 152

U-90E Data/Fax Modem
Special Functions
11-1
Chapter 11
Fax Operation
The U-90E can be used as a fax machine. In the sections below, we will describe how the
modem works as a fax machine, the ITU-T T.30 fax protocol, and the Class 1 and 2.0 fax
commands. Also covered are the status report result codes. The instructions for using the
included data/Fax modem utility program are included on the software disk. Some
distributors and dealers may have included other software with your modem. For help with
such software, refer to the software instructions.
11.1 Fax Basics
Fax is the abbreviation for facsimile. There are four major parts in a fax machine: the
scanner, encoding and decoding device, modem, and printer. Before a page can be sent,
it is first scanned. The bit-mapped data is encoded with data compression and is then
transmitted across the phone line by an internal modem module. The remote facsimile
receives the data with its internal modem, decodes it back to bit-mapped image data, and
prints it on paper.
Fax Branding : The Telephone Consumer Protection Act of 1991 makes it unlawful for
any person to use a computer or other electronic device to send any message via a
telephone or fax machine 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 or other entity, or individual sending the
message and the telephone number of the sending machine or such business, or entity,
or individual. In order to program this information into the fax function of your modem,
please refer to the documentation of the fax software you will be using.