Ricoh B079, Service Manual

Page: 815 / 948

DEDICATED TRANSMISSION PARAMETERS
SM 107 B547
Fax Op
tion
B54
7
Switch 04
No FUNCTION COMMENTS
4 V.8 protocol
0 : Off
1 : Disabled
If transmissions to a specific destination always end
at a lower modem rate (14,400 bps or lower),
disable V.8 protocol so as not to use V.34 protocol.
0: V.34 communication will not be possible.
If the setting is “Disabled”, the bit switch setting is
used.
5 Compression modes available
in transmit mode
0: MH only
1: Disabled
This bit determines the capabilities that are informed
to the other terminal during transmission.
If the setting is “Disabled”, the bit switch setting is
used.
6
to
7
ECM during transmission
Bit 7 Bit 6 Setting
0 0 Off
0 1 On
1 0 Not used
1 1 Disabled
For example, if ECM is switched on but is not
wanted when sending to a particular terminal, use
the (0, 0) setting.
Note that V.8/V.34 protocol and JBIG compression
are automatically disabled if ECM is disabled.
If the setting is “Disabled”, the bit switch setting is
used.
Switch 05 - Not used (do not change the settings)
Switch 06 - Not used (do not change the settings)
Switch 07 - Optional ISDN G4 kit required
No FUNCTION COMMENTS
0
to
3
Data rate
Bits 3 2 1 0 Setting
0 0 0 0 64 kbps
0 0 0 1 56 kbps
1 1 1 1 Disabled
If the setting is “Disabled”, the current setting of G4
parameter switch 2 (bits 0 and 1) is used.
4-7 Not used Do not change the settings.
Switch 08 - Not used