4 AT Commands, S-Registers, and Result Codes
71
S7
seconds 1–255* 50* Sets the time the modem
waits for a carrier signal
before aborting a call. Also
sets the wait for silence time
for the @ dial modifier.
S8
seconds 0–65 2 Sets the length of a pause
caused by a comma
character in a dialing
command.
S9
decimal 0, 1–127 37 (%) Sets ASCII code for remote
configuration escape
character. S9=0 disables
remote configuration.
S10
100 ms 1–254 20 Sets how long a carrier signal
must be lost before the
modem disconnects.
S11
1 ms 50–150* 95* Sets spacing and duration of
dialing tones.
S28
decimal 0, 1–255 1 0 disables, 1–255 enables
V.34 modulation.
S30
1 minute 0, 1–255 0 Sets the length of time that
the modem waits before
disconnecting when no data
is sent or received. A value of
zero disables the timer. See
also the
\T
command
S35
decimal 0–1 0 0 disables, 1 enables the V.25
data calling tone, which
allows remote data/fax/voice
discrimination.
Register Unit Range Default Description
* These values may be different outside North America.