5
AT Commands Set Summary
Command
Description
Command
Description
A/
Re-execute command
&Dn
Data terminal ready
(DTR) option
AT=X
Write to Selected
S-register
&Fn
Restore default
configuration
AT?
Read selected
S-register
&Gn
Select guard tone
A
Answer
&Kn
Flow control
Bn
CCITT/Bell mode
&Mn
Mode selection
Cn
Carrier control
Dn
Dial
&Pn
Pulse dialing control
En
Command echo
&Qn
Mode selection
Hn
Disconnect and hook
control
&Tn
Test and diagnostics
In
Modem identification
&Sn
Data set ready (DSR)
option
Ln
Speaker volume
&V
Display current
configuration
Mn
Speaker control
&Wn
Store current
configuration
On
Return to on-line data
mode
&Yn
Select default reset
profile
P
Set pulse dialing as
the default
&Zn=x
Store telephone
number
Qn
Result code control
%En
Auto fallback/
fallforward control
Sn
Access S-register
\An
Select maximum MNP
block size
