Ecm (Error Correction Mode) And - Ricoh Fax 680 MP Operator's Manual

ECM AND PAGE RETRANSMISSION
(Error Correction Mode)
ECM AND PAGE
(Error Correction Mode)
RETRANSMISSION
ECM is a signalling system that greatly reduces the chance of data being lost
because of a bad telephone line. ECM is useful if you frequently communicate
over poor telephone lines. With ECM switched on, the communication cost will
increase if the line is bad, but the data will be sent much more reliably.
If ECM is switched off, Page Retransmission will be used. The whole page will
be resent (unless you used Immediate Transmission, in which case damaged
data cannot be resent at all). ECM is more efficient, because it only resends
the damaged parts of the data, the maximum possible number of retransmis-
sion attempts is much higher, and it also works with Immediate Transmission. If
you prefer reliable communication, keep ECM switched on.
ECM set-up : See page 102.
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