Ricoh 170 / 180 User Manual

Page 73

ECM

(Error Correction Mode)

and Page Retransmission

(Type I Only)

ECM is a signaling 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 retransmission
attempts is much higher, and it also works with Immediate Transmission.
You can switch ECM on by following the procedure below.

1. Press the Function key and

6,2,2,2,2,6,2 using the ten keypad. Then
press the Yes key.

Y/NEXT k

SELECT LINE

2. Press the

key until "

ECM ON/OFF

is displayed.

Y/NEXT k

ECM ON/OFF

3. Press the Yes key.

ECM Y/j k

ON kOFF

4. Use the

and the

keys to switch this

feature on or off.

ECM Y/j k

kON OFF

5. Press the Yes key to store your setting,

then press the Function key.

TRANSMISSION