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SNM15
ATF
Selects the modulation standard that the modem will have to
adopt when it is connected to the remote modem. The choice of
a modulation standard automatically disables the other options;
for example with ATF4 you set the modem to operate only with
the V.22 standard (1200 bps full-duplex).
F0
F1
F4
F5
ATH
This command controls the telephone switch hook, causing the
modem to go immediately on-hook and terminate a call connection.
H0
H1
ATI
Command for the request for internal parameters and memory
tests.
I0
I1
I2
I4
5.4
= Multistandard enabled
= V.21 standard (300 bps full-duplex)
= V.22 standard (1200 bps full-duplex)
= V.22bis standard (2400 bps full-duplex)
= Disconnects the modem from the telephone line, the
line is switched over to the telephone, and if a
connection is going on, this will be broken.
= Connects the modem to the telephone line, the line is
switched over to data.
= Request for modem code
= Request for firmware release
= Request for internal memory test
= Request for the family of the modem.
AT Command Set Description
Digicom SpA
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