
User’s Guide & Reference 53
S-Registers
To change a setting, use the ATSr=n command, where r is
the register and n is a decimal value from 0 − 255
(unless otherwise indicated).
Register Default Function
S0 0 Sets the number of rings on which to answer in
Auto Answer Mode. When set to 0, Auto Answer
is disabled.
S1 0 Counts and stores the number of rings from an
incoming call. (S0 must be greater than 0.)
S2 43 Stores the ASCII decimal code for the escape
code character. Default character is +. A value
of 128 – 255 disables the escape code.
S3 13 Stores the ASCII code for the Carriage Return
character. Valid range is 0 – 127.
S4 10 Stores the ASCII decimal code for the Line Feed
character. Valid range is 0 – 127.
S5 8 Stores the ASCII decimal code for the
Backspace character. A value of 128−255
disables the Backspace key’s delete function.
S6 2 Sets the number of seconds the modem waits
before dialing. If Xn is set to X2 or X4, this is the
time-out length if there isn't a dial tone.
S7 60 Sets the number of seconds the modem waits for
a carrier. May be set for much longer duration if,
for example, the modem is originating an
international connection.
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