This command writes the value x to the currently selected S-Parameter. An S-Parameter can
be selected by using the ATSn command. All of the S-Parameters will return the OK response
if x is a number. Some registers may not be written due to country specific PTT limitations.
Syntax
S=x
Result Codes
OK For all arguments.
AT? - Read Selected S-Parameter
This command reads and displays the selected S-Parameter. An S-Parameter can be selected
by using the ATSn command.
Syntax
S=?
Result Codes
OK For all arguments.
Sn - Read/Write S-Parameter
The modem selects an S-Parameter, performs an S-Parameter read or write function, or
reports the value of an S-Parameter.
n Establishes S-Parameter n as the last register accessed.
n=v Sets S-Parameter n to the value v.
n? Reports the value of S-Parameter n.
The parameter n can be omitted, in which case the last S-Parameter accessed will be assumed.
The S can be omitted for AT= and AT?, in which case the last S-Parameter accessed will be
assumed. For example:
ATS7 establishes S7 as the last accessed register.
AT=40 sets the contents of the last register accessed to 40.
ATS=20 sets the contents of the last register accessed to 20.
If the number "n" is outside the range of the S-Parameters available, the modem will return
the ERROR message. If the value “v” is outside the range permitted for a given S-Parameter,
the modem will return the ERROR message. Input and output are always in decimal format.
Note that some S-Parameters are read-only.
In some cases, writing to the S-Parameter will appear to be accepted but the value will not
actually be written.
3.3.1 Factory Defaults
The factory default values are stored in the Registry and are loaded into the active
configuration at power up or by the Z command. In addition, the default profile is
subsequently loaded, and may change some of the factory default values.
The default values in the Registry may be loaded at any time by entering the &F command
.
3.3.2 S-Parameter Definitions
S0 - Number of Rings to Automatic Answer
S0 sets the number of the rings required before the modem automatically answers a call.
Setting this parameter to zero disables auto-answer mode.
Range: 0-255 rings
Default: 0
S1 - Ring Counter
S1 is incremented each time the modem detects a ring signal on the telephone line. S1 is
cleared if no rings occur over an eight second interval.
Range: 0-255 rings
Default: 0
