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Automatic Document Feeder which feeds documents into the fax machine without operator assistance.
American Standard Code for Information Interchange
Binary File Transfer which refers to how two equally equipped computers or fax systems transmit data and image files in their original format rather than a series of digitized dots.
Bits per Second which is the number of data bits sent per second between two modems and measures the rate at which digital information is passed.
Consultative Committee for International Telegraphy and Telephony
Cost per Copy which is designated the faxed output cost on a per page basis. CPC includes consumables such as toner, drum, developer, and sometimes labor.
Error Correction Mode
ElectroPhotography which is a fax print method that uses a laser or LED array as the light source.
Fax-On-Demand which uses interactive voice response and fax technology, providing callers with 24-hour access to a database of information, such as product literature. The caller specifies the desired documents and enters his or her's fax number. This is the same as a company having a Fax Back service such as Intel, Maxtor, Compaq, Microsoft, etc.
Group 3 which is predominantly the International Telecommunications Union standard for fax technology. G3 faxes are characterized by digital encoding methods where a page can be transmitted to an equally equipped systems in less than 1 minute at standard resolution (normal).
Integrated Services Data Network which is a digital network that may support G4 faxes at only 1.5 seconds per page.
International Telecommunications Union/Telecommunications Sector. This organization issues recommendations for all telecommunications devices, ensuring worldwide compatibility. It now performs the same functions as the CCITT.
Lines per Page which is a standard measurement of resolution for fax machines. A standard fax resolution would be 203 x 98 lpi.
Multifunctional Peripheral Product which are computer peripherals that print, fax, copy, and scan.
Modified Huffman which is the one dimensional coding scheme for fax data compression scans and encodes information horizontally across the page.
Modified Modified Read which is a two-dimensional coding scheme for fax data compression scans and encodes both horizontally and vertically. This method is 30% to 40% more efficient than MR alone, making it the fastest and the most cost effective encoding method.
Modified Read which is a two-dimensional coding scheme for fax data compression and encodes both horizontally and vertically, making it about 20% more efficient that MH.
Optical Mark Reader which is a special form to program fax instructions. For example, new settings on your fax machine such as a group broadcast listing can be quickly activated by scanning the OMR sheet into the system via the ADF.
Telephone Answering Device. Fax units equipped with a TAD can connect their answering machine to the fax so that they can receive both voice and fax messages on the same line.
Transmission Confirmation Report. This report should provide details on each fax communicaiton, such as time, date, duration, number of pages, receiver ID and receipt.
Transmit Terminal Identification is the information the sending unit "stamps" on the top of each page as it's transmitted, such as time, date, sender's fax number, name, and number of pages. This TTI is a mandatory requirement. The Telephone Consumer Protection Act of 1991 makes it unlawful for anyone to send a fax without this information programmed and activated. A fax machines should have TTI.


Date of last revision: 17 December 2001.
Extracted from the Imaging Magazine, April 1997.