User guide

Developers guidelines | AT commands
43 June 2010
ATS0 Automatic answer control
ATS2 Escape sequence character
ATS3 Command line termination character (ver. 3)
Description: Defines the automatic answering feature of the modem. A non-zero value
specifies the number of rings before the call is answered.
Note: The call always answers in the current fax class, regardless of
whether the incoming call is voice, data or fax.
Set command: ATS0=[<rcnt>]
Read command: ATS0? Displays the current <rcnt> setting.
Test command: ATS0=? Shows if the command is supported.
Test command
response: S0: (list of supported <rcnt>s)
Parameter:
<rcnt>:
<rcnt> Description
0 Disable automatic answer. Default value
1–7 Answer after the specified number of rings
Description: Defines the character to be used as the escape sequence character when
switching from online data mode to online command mode.
Set command: ATS2=[<esc>]
Parameter:
<esc>:
<esc> Description
0–255 Supported values.
Note: If the <esc> parameter is set to a value in the
range 128–255, the escape sequence detection is
disabled
43 Escape sequence character = “+”. Default value
Description: This S-parameter represents the decimal IA5 value of the character recog-
nised by the DCE from the DTE to terminate an incoming command line. It
is also generated by the DCE as part of the header, trailer and terminator
for result codes and information text, along with the S4 parameter.
The previous value of S3 is used to determine the command line termina-
tion character for entry of the command line containing the S3 setting
command. However, the result code issued will use the value of S3 as set
during the processing of the command line. For example, if S3 was previ-
ously set to 13 and the command line “ATS3=30” is issued, the command
line will be terminated with a <CR> character (IA5 0/13), but the result
code issued will use the character with the ordinal value 30 (IA5 2/14) in
place of the <CR>.