Westermo TD-32/485 Installation Manual page 20

Fn – Select Line Modulation
This command selects which type of modulation will be used on the phone line. If this parameter is
set to something else than F0, the line speed will be fixed. The value is written to register S31 bit 1.
Either the ATF command is used or the ATN command and register S37 but not both methods
simultaneously.
Selects automatically line speed according to the preference of the remote modem.
F0
Register S31 bit 1 and N1 is set. (Default)
F1 Selects 300 bit/s, V.21 (if B0 is set) or Bell 103 (if B1 is set).
This command is equivalent to ATN0S37=1.
F2 Not supported.
F4 Selects 1 200 bit/s, V.22 (if B0 is set) or Bell 212A (if B1 is set).
This command is equivalent to ATN0S37=5.
F5 Selects 2 400 bit/s, V.22bis.
This command is equivalent to ATN0S37=6.
F6 Selects V.32bis 4 800 bit/s or V.32 4 800 bit/s.
This command is equivalent to ATN0S37=7.
F7 Selects V.32bis 7 200 bit/s.
This command is equivalent to ATN0S37=12.
This command also enables connection to Rockwell 7 200 V.32 speed,
that is to a RC9696/12 based modem.
F8 Selects V.32bis 9 600 bit/s or V.32. 9 600 bit/s.
This command is equivalent to ATN0S37=9.
F9 Selects V.32bis 12 000 bit/s.
This command is equivalent to ATN0S37=10 This command also enables connection
to Rockwell 12 000 bit/s V.32bis speed, that is to a RC9696/12 based modem.
F10 Selects V.32bis 14 400 bit/s.
This command is equivalent to ATN0S37=11.
Please also refer to ATN, ATB, S37
20 6178-2203