Ricoh M052 Service Manual page 579

Bit Switches
Communication Switch 01 [SP No. 1-104-002]
No FUNCTION
ECM
0
0: Off 1: On
1
Not used
Wrong connection prevention
method
Bit 3: 0, Bit 2: 0 = None
2-3
Bit 3: 0, Bit 2: 1 = 8 digit CSI
Bit 3: 1, Bit 2: 0 = 4 digit CSI
Bit 3: 1, Bit 2: 1 = CSI/RTI
4-5 Not used
Maximum printable page
length available
Bit 7: 0 Bit 6: 0 = No limit
6-7
Bit 7: 0 Bit 6: 1 = B4 (364 mm)
Bit 7: 1 Bit 6: 0 = A4 (297 mm)
Bit 7: 1 Bit 6: 1 = Not used
M381
COMMENTS
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 settings.
(0,1) - The machine will disconnect the line without
sending a fax message, if the last 8 digits of the
received CSI do not match the last 8 digits of the
dialed telephone number. This does not work
when manually dialed.
(1,0) - The same as above, except that only the
last 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.
This function does not work when dialing
is done from the external telephone.
Do not change the setting.
The setting determined by these bits is informed to
the transmitting terminal in the pre-message
protocol exchange (in the DIS/NSF frames).
76 SM