BIT SWITCHES
B779 74 SM
G3-2 Switch 02 SP No. 1-106-003
No FUNCTION COMMENTS
0
G3 protocol mode used
0: Standard and non-standard
1: Standard only
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)
1-4 Not used Do not change the settings.
5
Use of modem rate history for
transmission using
Quick/Speed Dials
0: Disabled
1: Enabled
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.
6 Not used Do not change the settings.
7
Short preamble
0: Disabled 1: Enabled
Refer to Appendix B in the Group 3 Facsimile
Manual for details about Short Preamble.
G3-2 Switch 03 SP No. 1-106-004
No FUNCTION COMMENTS
0
DIS detection number
(Echo countermeasure)
0: 1
1: 2
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.
1 Not used Do not change the settings.
2
V.8 protocol
0: Disabled
1: Enabled
0: V.8/V.34 communications will not be possible.
Note:
Do not set to 0 unless the line condition is always
bad enough to slow down the data rate to 14.4 kbps
or lower.
3
ECM frame size
0: 256 bytes
1: 64 bytes
Keep this bit at “0” in most cases.
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