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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 beyond the range of the S-Parameters available, the modem will
return the ERROR message. The value "v" is "MOD"ed with 256. If the result is outside
the range permitted for a given S-Parameter the values will still be stored, but
functionally the lower and higher limits will be observed. 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.
3.3.2 Factory Defaults
The factory default values are stored in Product Configuration File 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 Product Configuration File may be loaded at any time by entering
the &F command.
3.3.3 S-Parameter Definitions
3.3.3.1 S0 - Number of Rings to Automatic Answer
S0 sets the number of the rings required before the modem automatically answers a call.
Setting this register to zero disables auto-answer mode.
Range: 0-255 rings
Default: 0
3.3.3.2 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
3.3.3.3 S2 - Escape Character
S2 holds the decimal value of the ASCII character used as the escape character. The
default value corresponds to an ASCII '+'. A value over 127 disables the escape process,
i.e., no escape character will be recognized.
Range: 0-255, ASCII decimal
Default: 43 (+)
3.3.3.4 S3 - Line Termination Character
S3 sets the decimal value of the command line and result code terminator character.
Pertains to asynchronous operation only.
Range: 0-127, ASCII decimal
Default: 13 (Carriage Return)
3.3.3.5 S4 - Response Formatting Character
S4sets the decimal value of the character generated by the modem as part of the header,
trailer, and terminator for result codes and information text, along with the S3 parameter
(see the description of the V parameter for usage). If the value of S4 is changed in a
command line, the result code issued in response to that command line will use the new
value of S4.
The Response Formatting character is output after the Line Termination character if
verbose result codes are used.
Range: 0-127, ASCII decimal
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