Ricoh D131 Service Manual page 1086

V.8 protocol
4 0: Off
1: Disabled
Compression modes available
in transmit mode
5
0: MH only
1: Disabled
ECM during transmission
Bit 7: 0, Bit 6: 0 = Off
6-7 Bit 7: 0, Bit 6: 1 = On
Bit 7: 1, Bit 6: 0 = Not used
Bit 7: 1, Bit 6: 1 = Disabled
Switch 04 - Not used (do not change the settings)
Switch 05 - Not used (do not change the settings)
Switch 06 - Not used (do not change the settings)
Switch 07 - Not used (do not change the settings)
Switch 08 - Not used (do not change the settings)
Switch 09 - Not used (do not change the settings)
D619
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.
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.
For example, if ECM is switched on but is not
wanted when sending to a particular terminal, use
the (0, 0) setting.
Note: 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.
194 SM