Rockwell RCV144ACx, Справочник по командам

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AT Command Reference Manual
1048 3-5
Fn - Select Line Modulation (RC144 Models Only)
This command selects the line modulation according to the parameter supplied. The line modulation is fixed unless
Automode is selected. This command interacts with the S37 and the N command. The parameter value, if valid, is written to
S37 bits 0-4. To select line modulation, it is recommended that either the F command, or a combination of the S37 and the N
command, be used, but not both.
F0 Selects auto-detect mode. Sets N1 and sets S31 bit 1. In this mode, the modem configures for
automode operation. All connect speeds supported by the modem are possible according to the
remote modem's preference. The contents of S37 are ignored as is the sensed DTE speed.
F1 Selects V.21 or Bell 103 according to the B setting as the only acceptable line speed resulting in a
subsequent connection. Sets N0, sets S37 to 1, and clears S31 bit 1. This command is equivalent
to the command string: ATN0S37=1.
F2 Not supported.
F3 Selects V.23 as the only acceptable line modulation for a subsequent connection. Originator is at
75 bps and answerer is at 1200 bps. Sets N0, sets S37 to 7, and clears S31 bit 1. This command
is equivalent to the command string: ATN0S37=7.
F4 Selects V.22 1200 or Bell 212A according to the B command setting as the only acceptable line
speed for a subsequent connection. Sets N0, sets S37 to 5, and clears S31 bit 1. This command
is equivalent to the command string: ATN0S37=5.
F5 Selects V.22 bis as the only acceptable line modulation for a subsequent connection. Sets N0,
sets S37 to 6, and clears S31 bit 1. This command is equivalent to the command string:
ATN0S37=6.
F6 Select V.32 bis 4800 or V.32 4800 as the only acceptable line modulation for a subsequent
connection. Sets N0, sets S37 to 8, and clears S31 bit 1. This command is equivalent to the
command string: ATN0S37=8.
F7 Selects V.32 bis 7200 as the only acceptable line modulation for a subsequent connection. Sets
N0, sets S37 to 12, and clears S31 bit 1. This command is equivalent to the command string:
ATN0S37=12.
This setting also allows connection at the Rockwell proprietary 7200 V.32 speed, e.g., with a
RC9696/12 based modem.
F8 Selects V.32 bis 9600 or V.32 9600 as the only acceptable line modulations for a subsequent
connection. Sets N0, sets S37 to 9, and clears S31 bit 1. This command is equivalent to the
command string: ATN0S37=9.
F9 Selects V.32 bis 12000 as the only acceptable line modulation for a subsequent connection. Sets
N0, sets S37 to 10, and clears S31 bit 1. This command is equivalent to the command string:
ATN0S37=10.
This setting also allows connection at the Rockwell proprietary 12000 V.32 speed, e.g., with a
RC9696/12 based modem.
F10 Selects V.32 bis 14400 as the only acceptable line modulation for a subsequent connection. Sets
N0, sets S37 to 11, and clears S31 bit 1. This command is equivalent to the command string:
ATN0S37=11.