Ricoh Aficio MP C3001 Service Manual page 1906

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 Bit 2
0 0
0 1
1 0
2-3
1 1
4-5 Not used
D545
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
Setting
8 digits of the dialed telephone number. This
does not work when manually dialed.
None
(1,0): The same as above, except that only the
8 digit CSI
last 4 digits are compared.
(1,1): The machine will disconnect the line
4 digit CSI
without sending a fax message, if the other end
CSI/RTI
does not identify itself with an RTI or CSI.
(0,0): Nothing is checked; transmission will
always go ahead.
Do not change the setting.
102
ID code of the local terminal. This
function is only available in
NSF/NSS mode.
Comments
This function does not work when
dialing is done from the external
telephone.
SM