BIT SWITCHES
SM 5-21 B465
Fax Unit
B465
Communication Switch 02
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 dpi 200 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
This bit is ignored if ECM is in use.
This method is enabled only when the switch 02-bit
7 below is set to 1.
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.
This bit is ignored if ECM is in use.
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.
3 Hang-up decision when a
negative code (RTN or PIN) is
received during immediate
transmission
0: No hang-up 1: Hang-up
0: The next page will be sent even if RTN or PIN is
received.
1: The machine will send DCN and hang up if it
receives RTN or PIN.
This bit is ignored for memory transmissions or if
ECM is being used.
4, 5 Wrong connection prevention
method (Auto Service Call)
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.
6 Not used Do not change the setting.
7 Burst error
0: Disabled 1: Enabled
If this switch is set to 0, burst error count method in
switch 02-bit 0 above is disabled, and only total
error line count method in switch 02-bit 1 above is
used.
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