1-22
&D1
Go to command mode on on-to-off DTR
transition
&D2 *
Hang up and go to command mode on on-
to-off DTR transition. Auto-answer is
disabled if DTR is low
&D3
Hang up and reset from user profile 0 on
the on-to-off DTR transition
&F
Recall factory default setting as active
configuration
&Gn
V.22bis guard tone option
&G0 *
No guard tone
&G1
550 Hz guard tone
&G2
1800 Hz guard tone
&Kn
Set local flow control
&K0
Disable flow control
&K3 *
Enable bi-directional hardware flow control
(CTS/RTS)
&K4
Enable bi-directional software flow control
(XON/XOFF)
&Pn
Pulse dialing make/break ratio selection
&P0
Make=39%, Break=61%, international
version (Default)
Make=33%, Break=67% for use in 20 pps,
Japanese version
&P1
Make=33%, Break=67%, international
version
Make=33%, Break=67% for use in 10 pps,
Japanese version (Default)
&Qn
Async communications mode options
&Q0
Async mode, buffered (same as “AT\N0”)
&Q5 *
Error control mode, buffered (same as
“AT\N3”)
&Q8
MNP error control mode. If an MNP error
control protocol is not established, the
modem will fallback according to the
current setting in S36 register.
&Q9
V.42 or MNP error control mode. If neither
error control protocol is established, the
modem will fallback according to the
current setting in S36 register.
&Sn
Data Set Ready (DSR) option
&S0 *
DSR always on
&S1
DSR on during handshake and on-line, off
in test mode or idle mode
&Tn
Self-test commands
&T0
Terminate any test in progress
&T1
Local analog loopback test
