HP OmniBook XE Reference Manual

AT Commands

Basic AT Commands

Function
Command
A/ Re-execute command
B0 Select V.22 connect @1200 bps
C1 Return OK message
E0 Turn off command echo
H0 Initiate a hang-up sequence
I0 Report product code
I1 Report pre-computed checksum
I3 Report firmware revision, model,
and interface type
I4 Report response programmed by OEM I5
I6 Report modem data pump model
and code revision
L1 Set low speaker volume
L3 Set high speaker volume
M1 Turn speaker on during handshaking
and turn speaker off while receiving
carrier
N0 Turn off automode detection
N1 Turn on automode detection
O0 Go on-line
P Force pulse dialing
Q1 Inhibit result codes to DTE
Sn? Return the value of S-Register n
T Force DTMF dialing
V0 Report short form result codes
W0 Report DTE speed only
W2 Report DCE speed only
X0 Report basic call progress result codes, X1
i. e., Ok, Connect, Ring, No Carrier
(also, for busy, if enabled, and dial tone
not detected), No Answer and Error
X2 Report basic call progress result codes
and connections speeds, i.e., Ok,
Connect, Ring, No Carrier (also, for
busy, if enabled, and dial tone not
detected), No Answer, Connect XXXX,
and Error
X4 Report all call progress result codes
and connections rate, i.e., Ok, Connect, Y1
Ring, No Carrier, No Answer, Connect
XXXX, Busy, No Dial Tone and Error Z0
Z1 Soft reset and restore stored profile 1
after warm reset
&C1 Allow RLSD to follow the carrier state
&D0 Interpret DTR On-to-OFF transition
per &Qn
&Q0, &Q5, &Q6 The modem ignores DTR
&Q1, &Q4
&Q2, &Q3
&D2 Interpret DTR On-to-OFF transition
per &Qn
&Q0 through &Q6 The modem hangs up
Note: Bold face indicates default value
&F0 Restore factory configuration 0
The modem hangs up
The modem hangs up
Function
Command
A Go off-hook and attempt to answer a call
B1 Select Bell 212A connect @1200 bps
Dn Dial modifier
E1 Turn on command echo
H1 If on-hook, go off-hook and enter
command mode
I2 Report "OK" if the calculated checksum
equals the prestored checksum or if the
prestored checksum value is FFh
Report the country code parameter
I7 Report the DAA code
L0 Set low speaker volume
L2 Set medium speaker volume
M0 Turn speaker off
M2 Turn speaker on during handshaking and
while receiving carrier
M3 Turn speaker off during dialing and
receiving carrier and turn speaker on
during answering
O1 Go on-line and initiate a retrain sequence
Q0 Allow result codes to DTE
Sn Select S-Register n as default
Sn=v Set default S-Register n to value v
V1 Report long form result codes
W1 Report line speed, EC protocol and DTE
speed
Report basic call progress result codes
and connections speeds (Ok, Connect,
Ring, No Carrier (also, for busy, if
enabled, and dial tone not detected), No
Answer, Connect XXXX, and Error
X3 Report basic call progress result codes
and connections rate, i.e., Ok, Connect,
Ring, No Carrier, No Answer, Connect
XXXX, Busy, and Error
Y0 Disable long space disconnect before on-
hook
Enable long space disconnect before on-
hook
Restore stored profile 0 after warm reset
&C0 Soft reset and force RLSD active
regardless of the carrier state
&D1 Interpret DTR On-to-OFF transition
per &Qn
&Q0, &Q1, &Q4, &Q5, &Q6 Asynchronous escape
&Q2, &Q3
&D1 Interpret DTR On-to-OFF transition
per &Qn
&Q0, &Q1, &Q4, &Q5, &Q6 Soft reset
&Q2, &Q3
&F1 Restore factory configuration 1
The modem hangs up
The modem hangs up