User`s manual

AT Command Reference Manual
4-16 1048
S37 - Desired Line Connection Speed
This register specifies the desired line connection speed.
Notes:
1. When the Nn command is issued or the S37 register value is modified, the +MS command subparameters are updated
to reflect the speed and modulation specified by the S37 value (see +MS command). For example:
If N0 command is active, S37=10 updates the +MS command subparameters to reflect +MS=10,1,300,12000
If N1 command is active, S37=10 updates the +MS command subparameters to reflect +MS=10,0,12000,12000
2. S37 is not updated by the +MS command.
3. Use of the +MS command is recommended instead of the Nn and S37=x commands. Nn and S37=x commands are
supported for compatibility with existing communication software.
Default: 0
Bits 0-4 Desired line connection speed. This is interlinked with the Fn command (RC144). If an invalid
number is entered, the number is accepted into the register, but S37 will act as if the default
value has been entered.
0 = Attempt automode connection. If N0 is active, connection is attempted at the most
recently sensed DTE speed (+MS command settings are updated to the
appropriate values). If N1 is active, connection is attempted at the highest
possible speed (+MS settings are updated to 11,1,300,2880 to reflect V.34,
automode, 300 bps minimum speed, and 28800 bps maximum speed). (Default.)
1-3 = Attempt to connect at 300 bps. F1 command (RC144).
4 = Reserved.
5 = Attempt to connect at V.22 1200 bps. F4 command (RC144).
6 = Attempt to connect at V.22 bis 2400 bps. F5 command (RC144).
7 = Attempt to connect at V.23.
8 = Attempt to connect at V.32 bis/V.32 4800 bps. F6 command (RC144).
9 = Attempt to connect at V.32 bis/V.32 9600 bps. F8 command (RC144).
10 = Attempt to connect at V.32 bis 12000 bps. F9 command (RC144).
11 = Attempt to connect at V.32 bis 14400 bps. F10 command (RC144).
12 = Attempt to connect at V.32 bis 7200 bps. F7 command (RC144).
Bits 5-7 Reserved