Ricoh IM C300 Service Manual page 1551

1: Optional mode priority
7 Closed network (reception)
0: Disabled
1: Enabled
Communication Switch 01 (SP No. 1-104-002)
No Function
0 ECM
0: Off 1: On
1 Not used
2- Wrong connection
3 prevention method
Bit Bit Setting
3 2
0 0 None
0 1 8 digit CSI
1 0 4 digit CSI
1 1 CSI/RTI
4- Not used
5
6- Maximum printable
7 page length available
Bit Bit Setting
7 6
0 0 No limit
0 1 B4 (364
mm)
1 0 A4 (297
mm)
1 1 Not used
D0CK
1: Reception will not go ahead if the polling ID code of the
remote terminal does not match the polling ID code of the
local terminal. This function is only available in NSF/NSS
mode.
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 setting.
(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
Bit Switches – 3
SM