User guide

V.250 AT COMMANDS
47 AT Commands for EV-DO-EV3 Modems
Escape Character S2
Set command sets the ASCII character to be used as escape character.
Read command returns the current value of S2 parameter. The format of the numbers in output is always 3 digits,
left-filled with 0s.
Syntax
Command Command type
ATS2=[<char>] Set
ATS2? Read
Parameters and Values
<char> Escape character (decimal ASCII).
0-255 Default: 43 (+).
Notes
 The escape sequence consists of three escape characters preceded and followed by n ms of idel (see S12 to
set n).
 Reference: V.25ter
Command Line Termination Character S3
Set command sets the value of the character either recognized by the device as command line terminator or
generated by the device as part of the header, trailer, and terminator for result codes and information text, along
with S4 parameter.
Read command returns the current value of S3 parameter. The format of the numbers in output is always 3 digits,
left-filled with 0s.
Syntax
Command Command type
ATS3=[<char>] Set
ATS3? Read
Parameters and Values
<char> Command line termination character (decimal ASCII).
0-127 Default: 13 (ASCII <CR>).
Note: The “previous” value of S3 is used to determine the command line
termination character for entering the command line containing the S3 setting
command. However the result code issued uses the “new” value of S3, as set
during the processing of the command line.
Notes
 Reference: V.25ter.
Response Formatting Character S4
Set command sets the value of the character generated by the device as part of the header, trailer, and terminator
for result codes and information text, along with the S3 parameter.