Chapter 3: AT Commands Reference
June 30, 2008 AT Commands Reference Manual 3-287

S12

This command handles the selection of the guard time, which is stored in S-Register 12, and
specifies the behavior of escape characters during CSD connection.
Note: For a guard time specified by S-Register 12, no character should be entered before or after
"+++". The duration between escape codes must be smaller than the guard time.
The following table shows the S12 parameters.
\S, Show the Status of the Commands and S-registers in Effect
This command displays the status of selected commands and S-registers.
\G, Software Control
This command sets the use of the software control. It is used for backward compatibility.
\J, Terminal Auto Rate
This command adjusts the terminal auto rate. It is used for backward compatibility.
\N, Link Type
This command displays the link type. It is used for backward compatibility.
+CBAND, Change Radio Band
This command has no effect, and only returns OK. It is used for backward compatibility.
Command
Type Syntax Response/Action Remarks
Set S12=<guard_time> OK
+CME ERROR: <err>
The Set command sets the CSD escape
character guard time value if all
parameters are valid.
Read S12? <guard_time>
OK
+CME ERROR: <err>
The Read command displays the
current CSD escape character guard
time.
Table 3-188: S12 Parameters
<Parameter> Description
<guard_time> CSD escape character guard time (units of 50 msec).
Range is 0 to 255. The default value is 20.