Ricoh B089 Service Manual page 668

BIT SWITCHES
Communication Switch 01
No FUNCTION
0 ECM
0: Off 1: On
1 Not used
2 Wrong connection prevention
to method
3 Bit 3 Bit 2
0 0
0 1
1 0
1 1
4-5 Not used
6 Maximum printable page length
to available
7 Bit 7 6 Setting
0 0 No limit
0 1 B4 (364 mm)
1 0 A4 (297 mm)
1 1 Not used
B576
If this bit is set to 0, ECM is switched off for all
communications.
In addition, V.8 protocol and JBIG compression are
switched off automatically.
Do not change the setting.
(0,1) - The machine will disconnect the line without
sending a fax message, if the last 8 digits of the
Setting received CSI do not match the last 8 digits of the
None dialed telephone number. This does not work when
8 digit CSI manually dialed.
4 digit CSI (1,0) - The same as above, except that only the last
CSI/RTI 4 digits are compared.
(1,1) - The machine will disconnect the line without
sending a fax message, if the other end does not
identify itself with an RTI or CSI.
(0,0) - Nothing is checked; transmission will always
go ahead.
Note: This function does not work when dialing is
done from the external telephone.
Do not change the settings.
The setting determined by these bits is informed to
the transmitting terminal in the pre-message
protocol exchange (in the DIS/NSF frames).
COMMENTS
3-28
SP No. 1-104-002
SM