Ricoh Type M12 Field Service Manual page 146

4. Service Tables
DIS frame length
4
0: 10 bytes 1: 4 bytes
5 Not used
Forbid CED/AMsam output
6 0: Off
1: On (Forbid output)
7 Not used
No
G3 protocol mode used
0 0: Standard and non-standard
1: Standard only
1-4 Not used
AI modem rate selection
5
0: OFF, 1: ON
6 Not used
Short preamble
7
0: Disabled 1: Enabled
No
DIS detection number
(Echo countermeasure)
0
0: 1
1: 2
1 Not Used
144
1: The bytes in the DIS frame after the 4th byte will not
be transmitted (set to 1 if there are communication
problems with PC-based faxes which cannot receive the
extended DIS frames).
Do not change the setting.
Do not change this setting (Default: 0: Off), unless
communication problem is caused by a CED or ANSam
transmission.
Do not change the setting.
G3-2 Switch 02 (SP No. 1-106-003)
Function
Change this bit to 1 only when the other end can only
communicate with machines that send T.30-standard
frames only.
1: Disables NSF/NSS signals (these are used in non-
standard mode communication)
Do not change the settings.
Selects if the AI modem rate is ON or OFF.
Do not change the settings.
Refer to Appendix B in the Group 3 Facsimile Manual
for details about Short Preamble.
G3-2 Switch 03 (SP No. 1-106-004)
Function
0: The machine will hang up if it receives the same DIS
frame twice.
1: Before sending DCS, the machine will wait for the
second DIS which is caused by echo on the line.
Do not change the settings.
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