Ricoh M052 Service Manual page 596

Bit Switches
1 1
Other settings - Not used
Modem types available for reception
Bit 7 Bit 6 Bit 5 Bit 4
0 0
0 0
0 0
4-7
0 1
0 1
Other settings - Not used
G3 Switch 07 [SP No. 1-105-008]
No FUNCTION
PSTN cable equalizer
(tx mode: Internal)
Bit 1: 0, Bit 0: 0 = None
0-1
Bit 1: 0, Bit 0: 1 = Low
Bit 1: 1, Bit 0: 0 = Medium
Bit 1: 1, Bit 0: 1 = High
M381
1 0 33.6k
Setting
0 1 V.27ter
V.27ter,
1 0
V.29
V.27ter,
1 1
V.29
V.27ter,
0 0
V.29, V.17
V.27ter,
0 1 V.29, V.17,
V.34
Use a higher setting if there is signal loss at higher
frequencies because of the length of wire between the
modem and the telephone exchange.
Use the dedicated transmission parameters for
specific receivers.
Also, try using the cable equalizer if one or more of the
following symptoms occurs.
Communication error
Modem rate fallback occurs frequently.
The setting of these bits is used to
inform the transmitting terminal of the
available modem type for the machine
in receive mode.
If V.34 is not selected, V.8 protocol
must be disabled manually.
Cross reference:
V.8 protocol on/off - G3 switch 03, bit2
COMMENTS
This setting is not effective in V.34
communications.
90 SM