Brother MFC-640CW User Manual page 202

Coding method Method of coding the information contained in the
document. All fax machines must use a minimum standard of
Modified Huffman (MH). Your machine is capable of greater
compression methods, Modified Read (MR), Modified Modified
Read (MMR) and JPEG, if the receiving machine has the same
capability.
Communication error (or Comm. Error) An error during fax
sending or receiving, usually caused by line noise or static.
Compatibility group The ability of one fax unit to communicate
with another. Compatibility is assured between ITU-T Groups.
Contrast Setting to compensate for dark or light documents, by
making faxes or copies of dark documents lighter and light
documents darker.
Delayed Fax Sends your fax at a specified later time that day.
Distinctive Ring A subscriber service purchased from the
telephone company that gives you another phone number on an
existing phone line. The Brother machine uses the new number to
simulate a dedicated fax line.
Dual Access Your machine can scan outgoing faxes or scheduled
jobs into memory at the same time it is sending a fax or receiving
or printing an incoming fax.
Easy Receive Enables your machine to respond to CNG tones if
you interrupt a fax call by answering it.
ECM (Error Correction Mode) Detects errors during fax
transmission and resends the pages of the fax that had an error.
Extension phone A telephone on the fax number that is plugged
into a separate wall jack.
External phone A telephone that is plugged into the EXT jack of
your machine.
F/T Ring Time The length of time that the Brother machine rings
(when the Receive Mode setting is Fax/Tel) to notify you to pick
up a voice call that it answered.
Fax Forwarding Sends a fax received into the memory to another
pre-programmed fax number.
G - 2 GLOSSARY