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S Registers
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ATS0 Rings Before Answer
S Register 0 contains a decimal value (from 0-255) indicating the number of rings the modem will
wait before answering an incoming call.
If you place a value of 0 in this S Register, auto-answer operation will be disabled.
The default value for S Register 0 is 0 — the modem will not answer an incoming call.
Examples
ATS0=0 Disable auto-answer
ATS0=4 Wait four rings before answering an incoming call
Default
0
Range
0-255