Bit Switches
SM 93 D432/D433
D432/D433
Fax Option
Type
C2550/C2530
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/V.33
0 1 0 1
V.27ter,
V.29,
V.17/V33,
V.34
Other settings - Not used
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
G3 Switch 07 [SP No. 1-105-008]
No FUNCTION COMMENTS
0-1
PSTN cable equalizer
(tx mode: Internal)
Bit 1: 0, Bit 0: 0 = None
Bit 1: 0, Bit 0: 1 = Low
Bit 1: 1, Bit 0: 0 = Medium
Bit 1: 1, Bit 0: 1 = High
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.
2-3
PSTN cable equalizer
(rx mode: Internal)
Bit 3: 0, Bit 2: 0 = None
Bit 3: 0, Bit 2: 1 = Low
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
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