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Modem information
B-13
S registers
S registers are information storage areas inside the modem. The AT command set
uses the S registers to configure modem options. Some S registers have default
settings. For normal modem operations, the default settings are usually adequate.
However, special circumstances may require you to change some defaults. To
change or read the value of an S register, begin the command with the letters
AT
.
To read the value of an S register:
• Use the
ATSr
?
command
(
r
=register number 0-28).
For example, to read the value of S register 0, type
ATS0
?
and press
Enter
.
To change the value of an S register:
• Use the
ATSr=n
command (
r
=register number 0-28,
n
=the new value you want
to assign).
For example, to change the value of S register 0 to 20 rings, type
ATS0=20
and
press
Enter
.