Canon iR2020 Facsimile Manual page 220

E
ECM
F
Fax Standby Display
Fine
G
Group dialing
11
11-6
Glossary
Stands for Error Correction Mode. Reduces system and line errors when sending or
receiving from another fax machine with ECM capability. When there is noise on the
telephone line, a distortion or blank area can occur in the document received by the
other party. ECM divides one page into a number of blocks and checks for lost data
block by block. When some data is lost in a certain block, ECM repeats transmission
from the beginning of that block after confirming that all data within the block can be
transmitted successfully. In this way, ECM guarantees that a good image can be
received at the receiving end. ECM is very effective in countries where the telephone
lines are in poor condition. There may be occasions when you want to turn ECM OFF.
For instance, when you feel the transaction speed is extremely slow.
The machine is ON, and ready to use. All operations start from the Fax standby
display, where the date and time are displayed.
Use this setting for documents with very small characters and lines. It is twice the
standard resolution.
Group dialing enables you to dial up to 199 previously registered one-touch speed
dialing or coded speed dialing numbers together as a group. This means you only
need to press a one-touch speed dial key or [Coded Dial] followed by a three-digit
code to dial a large group of numbers automatically. You register each group of
facsimile numbers under a one-touch or coded speed dialing key, so make sure a key
is available before trying to register numbers for group dialing. Once a group is
defined, you can add or delete numbers to/from the group.