DM562P
Operation Manual & AT Command Set
Integrated Data/Fax/Voice/Speakerphone Modem
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Preliminary
Version: DM562P-MA-P01
July 12, 2000
AT Command set
PART I : Data COMMAND SET
General Command
A/
Repeat the last executed AT command
Do not precede A/ with AT or follow with
ENTER.
AT
Attention Characters.
'AT' character pairs always at the beginning of
each command line, except 'A/', which is to
repeat the last executed AT command.
Note: The following commands always have to
precede with 'AT' attention character pair, if it is
the first command in the command line.
A
Manually answer incoming call.
D
Dial (Originate a Call).
The following modifiers can be used in the dial
string:
0-9,#,* Dialing digits. Touch Tone dial
characters.
P
Pulse dialing.
T
Touch Tone dialing.
W
Wait for second dial tone.
,
Pause (programmable by S8).
^
Enable 1300 Hz calling tone.
!
Flash (delay 500 ms).
;
Return to command mode.
DS=n
Dial stored number.
Dials one of three telephone numbers (n =
0,1 or 2) which is stored in the modem's
nonvolatile memory via AT&Zn=x command.
En
Command Echo.
E0
Disables command echo.
E1*
Enables Command echo.
+++
Default Escape Character.
To switch from data mode to command mode,
you can pause one second and type '+++'. Do
not follow with carriage return. The default
ASCII character '+' is decimal 43. You can
change register S2 to any value from 0 to 255.
Values greater than 127 disable the escape
feature and prevent you from returning to the
Command Mode. Please refer to S2 and S12.
Hn
Hook control.
H0*
Modem is on-hook (disconnect from line).
H1
Modem is off-hook (connect to line).
In
Identification.
I0*
Display product-identification code.
I1
Factory set.
I2
Internal memory test.
I3
Firmware version 1.
I4
Firmware version 2.
Ln
Volume Control.
L0
Speaker volume off.
L1*
Low speaker volume.
L2
Medium speaker volume.
L3
Loud speaker volume.
Mn
Speaker Control.
M0
Speaker off.
M1*
Speaker on until carrier detected.
M2
Speaker always on.
M3
Speaker on until carrier detected and off while
dialing.
Nn
Auto mode Selection.
N0
Disable auto mode. Modem connect speed is
fixed according to AT*Nn setting.
N1*
Enable adaptive connect speed (always
connect at the highest compatible speed).
On
Return to Data Mode Selection.
O0*
Return to Data Mode.
O1
Return to Data Mode and initiate a retrain.
Qn
Modem Response Selection.
Q0*
Modem sends responses.
Q1
Modem does not send responses.
Sr?
Reads Register r Value.
r is 0 to 97.
Sr=n
Set Register r to Value n.
r is 0 to 97, n is 0 to 255.
Un
V.34 Control.
U0
Disable V.34 when AT*N1 - AT*N6.
U1
Enable V.34.
U2
Enable V.34 aggressive connection
U3*
Enable V.90
