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9-17 Enabling and Disabling ECM
ECM (Error Correction Mode) is a newly developed signaling system which greatly reduces
the possibility of data being lost as a result of bad telephone lines. You should enable ECM if
you frequently communicate over poor telephone lines. Using ECM, telephone charges are
not affected, and may even be reduced, unless you encounter a bad line. In this case, the
extra signaling involved will increase line charges but data will be transmitted much more
reliably.
When transmitting from the memory, pages that are not sent correctly will be resent auto-
matically, even if ECM is disabled. However, ECM is a more efficient way of resending dam-
aged data, as only the damaged parts of the data will be resent. Also, the maximum possible
number of retransmission attempts is much higher.
1. Press the Function key, then enter 83.
2. Press Yes.
If the current status is as you require, then go to
step 4.
3. Either:
Press . to enable ECM.
Or:
Press # to disable ECM.
4. Press Function to return to standby.
I MODE NO 83
Y/N
SELECT ECM’J
I
~
The Current status
1
+
ECM OFF
-
‘1
,ON–* OFF–U
1-
ECM ON
ION–* OFF–#
I
The Current Status
/’
~
ECM OFF’
ON–*
OFF–#
I
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