Ricoh D025 Service Manual page 1456

7 Not used
G3-2 Switch 02 [SP No. 1-106-003]
No FUNCTION
G3 protocol mode used
0 0: Standard and non-standard
1: Standard only
1-4 Not used
Use of modem rate history for
transmission using
5 Quick/Speed Dials
0: Disabled
1: Enabled
6 Not used
Short preamble
7
0: Disabled, 1: Enabled
G3-2 Switch 03 [SP No. 1-106-004]
No FUNCTION
DIS detection number
(Echo countermeasure)
0
0: 1
1: 2
1 Not used
2 V.8 protocol
SM
Do not change the setting.
COMMENTS
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.
0: Communications using Quick/Speed Dials
always start from the highest modem rate.
1: The machine refers to the modem rate history
for communications with the same machine when
determining the most suitable rate for the current
communication.
Do not change the settings.
Refer to Appendix B in the Group 3 Facsimile
Manual for details about Short Preamble.
COMMENTS
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.
0: V.8/V.34 communications will not be possible.
115
Bit Switches
D393