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3.3 S-PARAMETERS
The supported S-Parameters are summarized in Table 3-3.
Table 3-3. S-Parameter Summary
Register Function Range Units Saved
S0 Number of Rings to Automatic
Answer
0-255 rings *
S1 Ring Counter 0-255 rings
S2 Escape Character 0-255 ASCII *
S3 Line Termination Character 0-127 ASCII
S4 Command Line Editing Character 0-127 ASCII
S5 Command Line Editing Character 0-255 ASCII
S6 Wait Time for Dial Tone 2-255 s *
S7 Wait Time for Carrier 1-255 s *
S8 Pause Time for Dial Delay Modifier 0-255 s *
S10 Carrier Loss Disconnect Time 1-255 0.1 s *
S11 DTMF Tone Duration 50-255 0.001 s *
S12 Escape Prompt Delay 0-255 0.02 s *
S29 Flash Dial Modifier Time 0-255 10 ms
* Parameter value may be stored in the Product Configuration File with the &W
command.
** Default values may be modified using the Product Configuration File.
3.3.1.1 AT=x - Write to Selected S-Parameter
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.
3.3.1.2 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.
3.3.1.3 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:
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