S Registers
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ATS10 Lost Carrier/Hang Up Delay
S Register 10 contains the amount of time, in tenths of a second, the modem will wait after the
carrier has been lost before hanging up.
If a value of 255 is placed in this register, the modem will not hang up after the carrier is lost
from the remote modem. In this case, you must use the H command to hang up.
Examples
ATS10=12 Wait 1.2 seconds after losing carrier before hanging up
Default
18
Range
1-255