BIT SWITCHES
21 December, 2001
3-32
Communication Switch 01
SP No. 1-104-002
No
FUNCTION
COMMENTS
0
ECM
0:
Off
1:
On
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.
1
Not used
Do not change the setting.
2
to
3
Wrong connection prevention
method
Bit 3
Bit 2
Setting
0
0
None
0
1
8 digit CSI
1
0
4 digit CSI
1
1
CSI/RTI
(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.
Note:
This function does not work when dialing is
done from the external telephone.
4-5
Not used
Do not change the setting.
6
to
7
Maximum printable page length
available
Bit 7
6
Setting
0
0 No limit
0
1 B4 (364 mm)
1
0 A4 (297 mm)
1
1 Not used
The setting determined by these bits is informed to
the transmitting terminal in the pre-message
protocol exchange (in the DIS/NSF frames).
Communication Switch 02
SP No. 1-104-003
No
FUNCTION
COMMENTS
0
Burst error threshold
0:
Low
1:
High
If there are more consecutive error lines in the
received page than the threshold, the machine will
send a negative response.
The Low and High threshold values depend on the
sub-scan resolution, and are as follows.
Resolution 100 dpi200 dpi
400 dpi
3.85 l/mm
7.7 l/mm 15.4 l/mm
Low settings 6
12
24
High settings 12
24
48
1
Acceptable total error line ratio
0:
5%
1:
10%
If the error line ratio for a page exceeds the
acceptable ratio, RTN will be sent to the other end.
2
Treatment of pages received
with errors during G3 reception
0:
Deleted from memory
without printing
1:
Printed
0:
Pages received with errors are not printed.
