Ricoh MP C407

4.Service Tables
88
7 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, bit 2
Bit 7 Bit
6
Bit
5
Bit
4
Types
0 0 0 1 V.27ter
0 0 1 0 V.27ter, V.29
0 0 1 1 V.27ter, V.29, V.33
0 1 0 0 V.27ter, V.29, V.17
0 1 0 1 V.27ter, V.29, V.17, V.34
Other settings - Not used
G3 Switch 07 (SP No. 1-105-008)
No Function Comments
0-
1
PSTN cable equalizer
(tx mode: Internal)
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.
• This setting is not effective in V.34 communications.
Bit
1
Bit
0
Setting
0 0 None
0 1 Low
1 0 Medium
1 1 High
2-
3
PSTN cable equalizer
(rx mode: Internal)
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.
Also, try using the cable equalizer if one or more of the following symptoms
occurs.
Communication error with error codes such as 0-20, 0-23, etc.
Modem rate fallback occurs frequently.
• This setting is not effective in V.34 communications.
Bit
3
Bit
2
Setting
0 0 None
0 1 Low
1 0 Medium
1 1 High
4 PSTN cable equalizer
(V.8/V.17 rx mode:
External)
0: Disabled
Keep this bit at "1".