Ricoh D069 Field Service Manual page 468

7. Appendix: Fax Service Program (Only For D068/D069)
Modem types available for reception
Bit 7 Bit 6
0 0
0 0
0 0
4-7
0 1
0 1
Other settings - Not used
G3 Switch 07 [SP No. 1-105-008]
7
No
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
276
Bit 5 Bit 4 Setting
0 1 V.27ter
1 0 V.27ter,V.29
V.27ter, V.29,
1 1
V.33
V.27ter, V.29,
0 0
V.17/V.33
V.27ter, V.29,
0 1 V.17/V33, V.
34
FUNCTION
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.