Ricoh Aficio MP2550B - Page 852

Bit Switches
D361 118 SM
G3-2 Switch 07 (SP No. 1-106-008)
No Function Comments
PSTN cable equalizer
(tx mode: Internal)
Bit 1 Bit 0 Setting
0 0 None
0 1 Low
1 0 Medium
1 1 High
0-1
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.
PSTN cable equalizer
(rx mode: Internal)
Bit 3 Bit 2 Setting
0 0 None
0 1 Low
1 0 Medium
1 1 High
2-3
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.
4
PSTN cable equalizer
(V.8/V.17 rx mode: External)
Keep this bit at "1".