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AT Command Set & Operation Manual
V.34 Integrated Data/Fax/Voice/Speakerphone
Operation Manual & AT Command Set
DM336P DATA/FAX/VOICE MODEM
Preliminary
Order No. DM336P-002-01
Version : DM336P-AT-P04
AT Command Set
Table of Contents
Operation Manual
Installation
Specification
Troubleshooting
AT Command Set
Part I : Data command
a. General Command
b. V.42bis / MNP 5 Command
c. Result Code
Part II : Fax Command
a. Fax Class 1 Command
b. Fax Class 2 Command
Part III :Voice Command
a. Voice Command
b. Shielded Command
Part V : S Registers
Preliminary
2
Order No. DM336P-002-01
Version : DM336P-AT-P04
AT Command Set
Operation manual
Specification
DM336P provides ISA plug & play function.
This function includes two operation modes.
One is Win95 mode. The other one is
Jumpless mode. User must uses DM336P
installation program to setup the COM port
when the card is set in Jumpless mode.
Installation
a.
Jumpless mode
1.
2.
3.
4.
Open the setting jumper.
Put modem card in computer’s slot.
Execute Comset.exe
Move Bar to “Configuration” and
press “Enter” to choose the
configuration function
5. Move Bar to “Modify COM port” and
press “ Enter” to entry COM port
selection mode.
6. Select the COM port and press
“ Enter”.
7. Move Bar to “Modify IRQ” and press
“Enter” to enter IRQ selection mode.
8. Select the IRQ and press ”Enter”.
9. Move Bar to “Save Configuration”
and press “Enter” to save your setting
in EEPROM.
10. Quit the installation program.
b. Win95 mode
1.
2.
3.
Short the setting jumper.
Put modem card in computer’s slot.
Use the “Control Panel” to setup you
modem system.
Preliminary
3
z
z
z
z
z
z
z
z
z
z
z
z
CCITT/ITU/Bell Standard:
V. 34+, V.34, V.32bis, V32, V22, V21,
Bell 103, V.17, V.29, V.21ter
MNP 5, 4, 3, 2
Host Interface : ISA bus PnP
Fax Group : Group III
Fax Command : EIA/TIA-578 Class 2
Voice Command : Davicom Command
Escape Command : TIES
Transmit Level : -12dbm +/- 1dbm
Sensitivity : -35dbm
Power : 620mw (Max)
Temperature : 0 to 55 Degree C
Dial Tone detection : 340Hz - 550Hz
Troubleshooting
Your modem is designed to provide
reliable and trouble-free operation.
However, please follow the suggest to
solve your problems.
Modem does not respond to commands.
1. Using Comset.exe program to set up
Com Port again.
2. Run “Diagnostic” to check you
modem
3. Use “AT&F&W&W1” as your
initialization command.
Modem dials but not connect.
1. Make sure the IRQ setting is identical
on both the modem AND the
software.
Make sure the Phone line is working
properly. A noisy line will prevent proper
modem operation.
Order No. DM336P-002-01
Version : DM336P-AT-P04
AT Command Set
Preliminary
4
Order No. DM336P-002-01
Version : DM336P-AT-P04
AT Command Set
returning to the Command Mode. Please
refer to S2 and S12.
PART I : Data COMMAND SET
General Command
A/
AT
Repeat the last executed AT command
Do not precede A/ with AT or follow with
ENTER.
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
E0
E1*
Command Echo.
Disables command echo.
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
Preliminary
5
Hn
H0*
H1
Hook control.
Modem is on-hook (disconnect from line).
Modem is off-hook (connect to line).
In
I0*
I1
I2
I3
I4
Identification.
Display product-identification code.
Factory set.
Internal memory test.
Firmware version 1.
Firmware version 2.
Ln
L0
L1
L2*
L3
Volume Control.
Speaker volume off.
Low speaker volume.
Medium speaker volume.
Loud speaker volume.
Mn
M0
M1*
M2
M3
Speaker Control.
Speaker off.
Speaker on until carrier detected.
Speaker always on.
Speaker on until carrier detected and off
while dialing.
Nn
N0
Auto mode Selection.
Disable auto mode. Modem connect speed is
fixed according to AT*Nn setting.
Enable adaptive connect speed (always
connect at the highest compatible speed).
N1*
On
O0*
O1
Return to Data Mode Selection.
Return to Data Mode.
Return to Data Mode and initiate a retrain.
Qn
Q0*
Q1
Modem Response Selection.
Modem sends responses.
Modem does not sends 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.
Order No. DM336P-002-01
Version : DM336P-AT-P04
AT Command Set
U0
U1
U2
Disable V.34 when AT*N1 - AT*N6.
Enable V.34.
Enable V.34 aggressive connection
&D1
&D2*
Vn
V0
V1*
Responses Selection.
Numeric responses.
Verbose (text) responses.
Xn
X0
X1
Response Set Selection (See table 1).
Report basic call progress result codes.
Report basic call progress result codes and
connections speeds, disable dial tone and
busy tone detection.
Report basic call progress result codes and
connections speeds, disable busy tone
detection only.
Report basic call progress result codes and
connections speeds, disable dial tone
detection only.
Report all call progress result codes and
connection rate.
X2
X3
X4*
Yn
Y0*
Y1
Long Space Disconnect Selection.
Disables long space disconnect. Modem
does not send or respond to long space
disconnect.
Enables long space disconnect. Modem
sends break signal for 4 seconds before
disconnect or will disconnect after receiving
1.6 seconds of break from remote modem.
&D3
Modem resets following an ON-to-OFF Data
Terminal Ready transition and retrieves
modem default configuration (Same as ATZ).
&F
Load Modem Factory Default Configuration
Restores the modem to the default operating
characteristics.
&Gn
&G0*
&G1
&G2
Guard Tone Selection.
Disable guard tone.
Enable 550 Hz guard tone.
Select 1800 Hz guard tone.
&Ln
&L0*
&L1
Dial-up or Leased-Line Operation Selection.
Modem is setup for dialup operation.
Modem is setup for 2-wire leased-line
operation.
Modem is setup for 4-wire leased-line
operation.
&L2
&Pn
&P0*
&P1
Zn
Z0*
Z1
&Cn
&C0
&C1*
Reset and Profile Retrieve Selection
Reset modem and retrieve active
configuration profile from stored
configuration profile 0.
Reset modem and retrieve active
configuration profile from stored
configuration profile 1.
&Rn
&R0
&R1
Carrier Output Selection.
Keep Data Carrier Detect (DCD) signal
always ON.
Set Data Carrier Detect (DCD) signal
according to remote modem data carrier
signal.
&R2*
&Dn
Data Terminal Ready (DTR) Signal
Handling.
&D0
Modem ignores the Data Terminal Ready
signal from host.
Preliminary
6
Modem returns to Command Mode and
asynchronous operation following an
ON-to-OFF Data Terminal Ready transition.
Modem hangs up, returns to the Command
Mode, and prepares for asynchronous
operation following an ON-to-OFF Data
Terminal Ready transition.
Make/Break Ratio.
US setting for off-hook (make) to on-hook
(break) ratio.
UK and Hong Kong setting for off-hook to
on-hook ratio.
Clear To Send (CTS) Signal Selection.
Modem turns on the Clear To Send signal
when it detects the Request To Send (RTS)
signal from host.
Modem ignores the Request To Send signal
and turns on its Clear To Send signal when
ready to receive data.
Clear To Send force on.
&Sn
&S0*
&S1
Data Set Ready (DSR) Signal Selection.
Data Set Ready is forced on.
Data Set Ready to operate according to RS232 specification.
&Tn
&T0*
Test Selection.
Terminates test in progress.
Order No. DM336P-002-01
Version : DM336P-AT-P04
AT Command Set
&T1
Performs Local Analog Loopback Test.
&V
Configuration Profile Display Selection.
&Wn
&W0*
Active Configuration Profile Store Selection.
Stores active configuration profile in
configuration profile 0.
Stores active configuration profile in
configuration profile 1.
&W1
&Yn
&Y0*
&Y1*
Selection of the Active Configuration After
Power-On or Reset.
Retrieves configuration profile 0 as the
active configuration profile when the Modem
is turned on or is reset.
Retrieves configuration profile 1 as the
active configuration profile when the Modem
is turned on or is reset.
&Zn=x
Store Telephone Numbers in Nonvolatile
Memory. Stores three telephone numbers,
31 characters each, in the non-volatile
memory.
Uses ATDS=n to dial or to use AT&M2 for
synchronous data mode.
*Gn
*G0
*G1*
Adaptive Handshake Selection.
Disables adaptive protocol handshake.
Enables adaptive protocol handshake.
*Nn
*N0
*N1
*N2
*N3
*N4
*N5
*N6
*N7
*N8
*N9
*N10
*N11
*N12
*N13
*N14*
*N15
*N16
*N17
Connect Speed Selection.
Selects connect speed 1200bps.
Selects connect speed 2400bps.
Selects connect speed 4800bps.
selects connect speed 7200bps.
Selects connect speed 9600bps.
Selects connect speed 12000bps.
Selects connect speed 14400bps.
Selects connect speed 16800bps.
Selects connect speed 19200bps.
Selects connect speed 21600bps.
Selects connect speed 24000bps.
Selects connect speed 26400bps.
Selects connect speed 28800bps.
Selects connect speed 31200bps .
Selects connect speed 33600bps .
Selects connect speed 1200/75bps.
Selects connect speed 300bps (V.21).
Selects connect speed 300bps (Bell 103).
Preliminary
7
*Pn
*P0*
*P1
User Abort Selection.
Enables user abort feature.
Disables user abort feature.
*Qn
*Q0
*Q1*
Auto Retrain Selection.
Disables auto retrain.
Enables auto retrain.
*Tn
*T0
*T1*
Trellis Coding Selection.
Disables Trellis coding.
Enables Trellis coding.
*Xn
*X0*
*X1
*X2
*X3
*X4
*X5
*X6
*X7
*X8
*X9
*X10
*X11
*X12
*X13
*X14
*X15
Transmission Level Selection.
Selects output level -11dBm.
Selects output level -12dBm.
Selects output level -13dBm.
Selects output level -14dBm.
Selects output level -15dBm.
Selects output level -16dBm.
Selects output level -17dBm.
Selects output level -18dBm.
Selects output level -19dBm.
Selects output level -20dBm.
Selects output level -21dBm.
Selects output level -22dBm.
Selects output level -23dBm.
Selects output level -24dBm.
Selects output level -25dBm.
Selects output level -26dBm.
V.42bis / MNP Command Set
%An
Set Auto-Reliable Fall Back Character
Set auto-reliable fall back character to n (n
= 0 to 127).
\An
\A0
\A1
\A2
\A3*
MNP Block Size Selection.
Selected 64-character maximum block size.
Selected 128-character maximum block size.
Selected 192-character maximum block size.
Selected 256-character maximum block size.
\Bn
Set Line Break.
Send a n/10 seconds line break to the
modem (n = 0 to 9). Default = 3. Break
length always 300 msec for MNP mode.
%Cn
%C0
Data Compression.
Disables data compression.
Order No. DM336P-002-01
Version : DM336P-AT-P04
AT Command Set
%C1*
Enables data compression.
\En
\E0*
\E1
Normal Mode Data Echo Selection.
Disables data echo during a normal link.
Enables data echo during a normal link.
\Jn
\J0*
DTE Baud Rate Adjustment Selection.
Disables DTE rate adjustment. DTE
rate is constant regardless of data link
speed.
Enables DTE rate adjustment. DTE
matches data link speed
\J1
\Kn
\K0
\K1
\K2
\K3
\K4
\K5*
\Nn
\N0
\N1
\N2
\N3
\N4
\N5*
\N6
\N7
Break Control Selection.
Enters the Command Mode, but does not
send a Break to remote modem. (To send a
Break after use the \B command).
Empty data buffers and immediately sends a
Break to remote.
Same as AT\K0.
Immediately send a Break.
Same as AT\K0.
Send a Break in sequence with any data
received from host.
Data Link Selection.
Selects Normal data link.
Selects Direct data link.
Selects MNP Reliable link only.
Selects MNP Auto-reliable link.
Selects V.42 reliable link with phase
detection.
Selects V.42 auto-reliable link with phase
detection.
Selects V.42 reliable link without phase
detection.
Selects V.42 auto-reliable link without phase
detection.
\Qn
\Q0
\Q1
\Q2
\Q3*
Flow Control Selection.
Disables flow control.
Selects XON\XOFF in-band flow control.
Selects CTS hardware flow control.
Selects RTS\CTS hardware flow control.
\Tn
Set Inactive Timer.
Set inactivity timer to n minutes (n = 0 to 90
). Default = 0.
Preliminary
8
\Vn
\V0
\V1*
V42/MNP Extended Response Selection.
Disables V42/MNP extended responses.
Enables V42/MNP extended responses.
\Xn
\X0*
\X1
XON\XOFF Pass-through Selection.
Process XON\XOFF and don't pass
through.
Processes XON\XOFF and pass through.
Wn
W0
W1*
DTE/DCE Speed Response Selection.
Display DCE connection rate
Display DTE connection rate
&Kn
&K0
&K3*
Flow Control Selection.
Disable Local flow control.
Selects RTS\CTS hardware flow control.
&K4
&K5
Selects XON\XOFF in-band flow control.
Selects Transparent XON\XOFF in-band
flow control.
&Mn
&M0
&M5*
Data Connection Selection.
Selects Direct data link.
Instructs the modem to make a data
connection using V.42 standard .
Result Code (Table 1)
Long Form
Short Form
n value in ATXn
0 1 2 3 4
OK
CONNECT
RING
NO CARRIER
ERROR
CONNECT 1200
NO DAILTONE
BUSY
NO ANSWER
CONNECT 600
CONNECT 2400
CONNECT 4800
CONNECT 9600
CONNECT 7200
CONNECT 12000
CONNECT 14400
CONNECT 19200
CONNECT 38400
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
20
21
22
x
x
x
x
x
x
x
x
x
x
x
x x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x x
x x
x x
x x
x x
x x
x x
x x
x x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Order No. DM336P-002-01
Version : DM336P-AT-P04
AT Command Set
CONNECT 57600
CONNECT 115200
CONNECT 1200RX/75TX
CONNECT 75TX/1200RX
RINGBACK
CONNECT BELL 300
CONNECT V21
23
24
25
26
27
28
29
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
%TT34 V.25 calling tone (1100)
%TT40 V.23 channel 2
%TT41 V.24 ter 2400 bps
%TT42 V.27 ter 4800 bps
%TT43 V.29 7200 bps
%TT44 V.29 9600 bps
%TT45 V.17 7200 bps long train
%TT46 V.17 7200 bps short train
%TT47 V.17 9600 bps long train
%TT48 V.17 9600 bps short train
%TT49 V.17 12000 bps long train
%TT4A V.17 12000 bps short train
%TT4B V.17 14400 bps long train
%TT4C V.17 14400 bps short train
%TT6R,S,A,P
V.34 modulation
( Display DCE speed by ATW0 )
CONNECT 16800
CONNECT 19200
CONNECT 21600
CONNECT 24000
CONNECT 26400
CONNECT 28800
CONNECT 31200
CONNECT 33600
15
16
17
21
30
31
32
33
PTT Testing Utilities
%TT00 - %TT 09 DTMF tone dial digits 0 to 9.
%TT0A DTMF digit *.
%TT0B DTMF digit A.
%TT0C DTMF digit B.
%TT0D DTMF digit C.
%TT0E DTMF digit #.
%TT0F DTMF digit D.
%TT10 V.21 channel 1 mark (originate)
%TT11 V.21 channel 2 mark symbol
%TT12 V.23 backward channel mark symbol
%TT13 V.23 forward channel mark symbol
%TT14 V.22 originate (call mark) signal at 600bps
%TT15 V.22 originate (call mark) signal at 1200bps
%TT16 V.22 bis originate (call mark) signal at
2400bps
%TT17 V.22 answer signal (guard tone if PTT
require).
%TT18 V.22 bis answer signal (guard tone if PTT require).
%TT19 V.21 channel 1 space symbol.
%TT20 V.32 9600 bps.
%TT21 V.32 bis 14400 bps.
%TT1A V.21 channel 2 space symbol.
%TT1B V.23 backward channel space symbol
%TT1C V.23 forward channel space symbol
%TT30 Silence (on-line), i.e., go off-hook
%TT31 V.25 answer tone
%TT32 1800 Hz guard tone
%TT33 V.25 calling tone (1300Hz)
Preliminary
9
R parameter
1
2
3
4
5
6
7
8
9
A
B
C
D
S parameter
1
2
3
Data Rate (bps)
2400 (V.34 only)
4800 (V.34 only)
7200 (V.34 only)
9600 (V.34 only)
12000 (V.34 only)
14400
16800
19200
21600
26400
28800
31200
33600
Symbol Rate (Baud)
2400
Reserved
2800
Order No. DM336P-002-01
Version : DM336P-AT-P04
AT Command Set
4
5
6
A Parameter
0
1
+FAA=1 Enables Auto detection of Data or Fax
operations.
3000
3200
3429
+FBOR=n Phase C Data Bit Order Selection.
+FBOR=0 Selects direct bit order for both Phase C
data and for Phase D data.
+FBOR=1 Selects reversed bit order for Phase C data
and selects direct bit order for Phase D
data.
Auxiliary Channel
Disable
Enable
P parameter Amount of upper Band Edge Attenuat
Compensated (dB)
0-9
see ITU - V.34 Figures 1,2 and Table
3,4
+FCR= Capability to Receive.
+FCR=0 Indicates the DCE will not receive message
data. Also the DCE will not be able to poll a
remote device.
+FCR=1 Indicates the DCE can receive message
data.
+FDCS=vr, br, wd, ln, df, er, ft, st Set Current
Session Parameter.
+FDCC=vr, br, wd, ln, df, er, ft, st Set DCE
Capabilities Parameters.
+FDIS=vr, br, wd, ln, df, er, ft, st Set Current
Session Negotiation Parameters.
PART II : FAX Command
Fax Class 1 Command
+FCLASS=n Data or Fax Mode Selection.
+FCLASS=0 Selects Data mode operation.
+FCLASS=1 Selects Fax Class 1 mode operation.
+FDR
Receive Data Command.
+FDT
Transmit Data Command.
+FAE=n Data/Fax Auto answer.
+FRH=n Recevie data with HDLC framing.
+FRM=n Receive data.
+FRS=n Receive silence.
+FTH=n Transmit data with HDLC framing.
+FTM=n Transmit data.
+FTS=n Stop Transmit and wait.
+FLID=”m” Set Local ID String.
'm' is 20 characters numeric string, set by
user, to be used in TSI or CSI frame.
+FMDL? Request Model Information.
+FMFR? Request Manufacturer Information.
+FREV? Request Revision Information.
Fax Class 2 Command
The Fax class 2 mode Result codes are:
+FCLASS=n Data or Fax Mode Selection.
+FCLASS=0 Selects Data mode operation.
+FCLASS=2 Selects Fax Class 2 mode operation.
OK
Command valid and executed successfully.
ERROR Command error and can not be executed.
+FAA=n Fax Auto Answer Mode Selection.
+FAA=0 Disables Fax Auto Answer operation
Preliminary
+FCFR Confirmation to receive prompt.
10
Order No. DM336P-002-01
Version : DM336P-AT-P04
AT Command Set
Modem issues the response when detects an
acceptable TCF training burst and a valid
DCS signal from remote modem.
+FCON Facsimile connection response
Modem issues the response when detects
call progress and fax handshaking is in
progress.
+FCSI:'m' Report the called station ID response
Modem issues this after receiving the
remote ID string.
+FDCS:vr, br, wd, ln, df, er, ft, st Report session
parameters response.
+FDIS:vr, br, wd, ln, df, er, ft, st Report remote
capabilities response.
+FET:<ppr> Post page message response
Modem issues this after the end of Phase C
reception, on receipt the post page
message from the transmitting modem.
0 MPS Another page, same parameters
1 EOM Anther document, new page
parameters.
2 EOP No more pages or documents.
+FHNG:m Call termination status response
Modem issues this to indicate the call has
been terminated.
+FPTS:<ppr> Page transfer status response
Modem issues this indicating the copy
quality and related post page message
responses received from the remote modem.
+FTSI:
Report remote station ID
Modem issues this after receiving TSI from
calling station.
Preliminary
11
Order No. DM336P-002-01
Version : DM336P-AT-P04
AT Command Set
any CID packet received after the first
RING cycle including SDM, MDM, or call
waiting packet.
#CLS Data, Fax or Voice Mode Selection.
#CLS? Returns the current setting of the #CLS.
#CLS=0* Selects data mode operation.
#CLS=2 Selects fax class 2 command operation.
#CLS=8 Selects voice mode operation.
#MDL? Request Model Information.
#MFR? Request Manufacturer Information.
#REV? Request Revision Information.
#TL=XXXX Voice Playback Volume Control.
#TL=0 mute, means no volume.
#TL=1 -24db, low volume
#TL=2 -18db
#TL=3 -12db
#TL=4 -6db
#TL=5* -0db
#TL=6 +6db
#TL=7 +12db
#TL=8 +18db, high volume
#VBS Bits Per Sample Selection.
#VBS? Returns the current setting of #VBS.
#VBS=1 Selects 8 bits PCM.
#VBS=2 Selects 2 bits per sample ADPCM.
#VBS=3 Selects 3 bits per sample ADPCM.
#VBS=4* Selects 4 bits per sample ADPCM.
PART III : VOICE MODE COMMAND SET
Voice Command
#BDR Baud Rate Selection.
#BDR? Returns the current setting of the #BDR.
#BDR=0*Enable autobaud detection.
#BDR=n Where n = 1,2,4,6,8,16,24. Sends OK
message and switches to the new speed
defined by n*2400 bps.
#CID
#CID
#CID=0*
#CID=1
Caller ID Selection.
Returns the current settings of #CID.
Disable Caller ID.
Enables formatted Caller ID reporting Single
Data Message (SDM) and Multiple Data
Message (MDM) packets.
#CID=2 Enables unformatted Caller ID reporting of
Preliminary
12
#VBT
#VBT?
Beep Tone Timer.
Returns the current setting of the #VBT
command.
#VBT=0 Disables the tone generation capability
#VBT=n Sets tone duration time in 100 msec. Where
n = 1-40. Default is 10.
#VCI?
Request Compression Method Information.
#VLS
Voice Line Selection.
#VLS? Returns the current setting of the #VLS.
#VLS=0* This command causes the telephone line
Order No. DM336P-002-01
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AT Command Set
interface to be routed through the modem.
#VLS=1 This command causes the handset to be
routed through the modem.
#VLS=2 This command routes the speaker through
the modem.
#VLS=3 This command routes the auxiliary input
device through the modem.
#VLS=4 This command is the same as #VLS=0,
except the modem enables the internal
speaker.
#VLS=6 This command enables the microphone and
speaker interface, use for speaker
phone mode.
#VRX
#VTX
Set Voice Receive Mode
This action command is only valid if the
modem is in the on-line voice command
mode.
Set Voice Transmit Mode
This action command is only valid if the
modem is in the on-line voice command
mode.
<DLE>0-9 DTMF digits 0 through 9
<DLE>*,# DTMF digits *, #
<DLE>A-D DTMF A through D
<DLE>a
Answer Tone detected,V.35/T30 2100Hz
answer tone is detected.
<DLE>b
Busy, The busy cadence is detected.
<DLE>c
Calling Tone, T.30 1100Hz Calling tone
is Detected.
<DLE>d
Dial Tone, The Dial tone is detected.
<DLE>e
European Calling Tone, V.25 1300Hz
Calling Tone is detected.
<DLE>f
Bell Answer Tone , Bell 2225Hz Answer
tone is detected.
Voice mode Result codes
OK
Command valid and executed successfully.
ERROR Command error and can not be executed.
VCON
Issued in Voice mode (#CLS=8) when the
modem determines that the remote modem
or handset has gone off-hook, or when
returning to on-line voice command mode.
NO ANSWER Issued in Voice mode (#CLS=8) when
the modem determines that the remote
modem has not picked up the line after the
S7
timer has expired.
CONNECT When Voice transmission by DTE can
begin.
Voice mode Shielded codes
Preliminary
13
Order No. DM336P-002-01
Version : DM336P-AT-P04
AT Command Set
Register S1 : Count Incoming Rings.
The S1 register records the number of incoming rings.
Reset to 0 after 8 seconds of no ring.
Register S2 : Value of the Escape Character.
Register S2 sets the ASCII value in decimal of the
escape character. The default value (decimal 43) is
equivalent to the ASCII character '+'.
You can change this register to any value from 0 to 255.
Values greater than 127 disable the escape feature.
Register S3 : Value of the Carriage Return Character.
Register S3 sets the ASCII value in decimal of the
carriage return character (End-Of-Line). The default
value is 13. You can change it to any ASCII value
between 0 and 127.
Register S4 : Value of the Line Feed Character.
Register S4 sets the ASCII value in decimal of the line
feed character. The default value is 10. You can
change it to any ASCII value between 0 and 127. If you
do not want to receive a line feed character, you can
change the value in this register to a null character, but
you cannot disable line feed characters.
Register S5 : Value of the Backspace Character
Register S5 sets the ASCII value in decimal of the
backspace character. This character is the character
created by pressing BACKSPACE key and the
characters echo to host are BACKSPACE, SPACE,
BACKSPACE ( i.e. move the cursor to the left ). The
default value is 8. You can change it to any ASCII value
between 0 and 32, or 127.
Note: Do not set the value of the backspace character
between 33 and 126.
PART V: S Registers
Register S0 : Auto Answer Ring.
Register S6 : Dial Tone Wait Time.
Assigning a value from 1 to 255 in Register S0 tells the
modem the number of rings that must occur before it
can automatically answer incoming calls. The default
value = 0 ( no Auto Answer).
Preliminary
14
Register S6 sets the time to wait after going off-hook
before dialing the first digit in a Dial command when
using the X0, X1 or X3 responses. The default time is 2
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AT Command Set
seconds, although you can change it to any value
between 2 and 255 seconds. This feature is
convenient when it takes longer than 2 seconds to
obtain a dial tone.
status and act as if the remote modem's carrier signal is
always present, set the value to 255.
Register S7 : Remote Carrier Signal Wait Time.
Register S11 controls the speed of the Touch Tone
(DTMF) dialing. You can change the value from 50 to
255 ms. The default value will be 95 ms which sets a
dialing rate of 5.26 digits per second. Increasing the
value to 255 slows the dialing rate to 1.9 digits per
second.
Register S11 : Touch Tone Dialing Duration.
Register S7 decides how many seconds to wait for a
remote modem's carrier signal before hanging up. The
default value is 45 seconds. You can change it to a
value between 1 and 255 seconds. Register S7 also
controls the time-out of the W command.
Note : Register S11 has no effect on pulse dialing,
which is fixed at 10 pulses per second.
Register S8 : Pause Time for Comma
Register S8 decides how many seconds to pause for
each comma ( , ) encountered in a Dial command line.
You usually use the comma when dialing through a
PBX or other special telephone services to wait for an
outside telephone line. The default value is 2 seconds,
although you can change it to a value between 0 and
255 seconds. An alternative to changing this register is
to include more than one comma in your command line.
Register S9 : Carrier Detect Response Time.
Register S9 sets the time the remote modem's carrier
signal must be present for the local modem to
recognize it. This feature ensures that your modem
does not mistake a busy signal, ring, or voice for the
carrier signal. The value of this register is in tenths of a
second. The default value is 600 ms , although you can
change it from 1 to 255. For example, entering a value
13 means that the remote modem's carrier signal must
be present for 1.3 seconds for the local modem to
recognize it. Setting this value higher increases the
chances the modem will not mistakenly identify the
carrier signal.
Register S10 : Carrier Loss Time.
Register S10 sets the time between the loss of a
remote modem's carrier signal and when the local
modem disconnects. This allows the remote modem's
carrier signal to momentarily disappear from the
telephone line. The value of this register is in tenths of
a second. The default value is 1.4 seconds, although
you can change it from 1 to 255. You may want to set
this value higher if you have a noisy telephone line that
might interfere with the remote modem's carrier signal.
If you want your modem to ignore the Carrier Detect
Preliminary
15
Register S12 : Escape Guard Time.
Register S12 controls the escape guard time ( i.e. the
time delay required before and after you enter the
escape characters). The guard time prevents your
modem from misinterpreting data as the escape
sequecce. This value is designated in measurements
of 20 ms. The default value is 50 ( which is equivalent to
one second), although you can change it to between 0
(0 seconds) to 255 (5.1 seconds).
Register S14 : Bit-mapped Register.
Bit-mapped register S14 lets you control modem echo,
responses, dialing method, and the originate or answer
mode.
Bit
0= x
Function
Undefined.
1= 0
1
Do not echo command (E0).
Echo command (E1) – default.
2= 0
1
Responses appear (Q0) – default.
Responses do not appear (Q1).
3= 0
1
Numeric responses (V0).
Verbose (Verbal) Responses (V1) – default.
4= x
Undefined.
5= 0
1
6= x
Use touch-tone dialing method (T) – default.
Use pulse dialing method (P).
Undefined
7= 0
Answer incoming calls (A)
Order No. DM336P-002-01
Version : DM336P-AT-P04
AT Command Set
1 Originate calls (D) -- default
Register S16 : Modem Tests.
Bit-mapped register S16 displays the modem tests
status.
Bit
Function
0= 0
Local analog loop back test off (&T0) –
default.
Local analog loop back test on (&T1).
1
1= x
Register S22 : Bit-mapped Register
Bit-mapped register S22 lets you control internal
speaker and the modem responses.
Bit
Function
------------------------------------------------------0,1= 0 Speaker volume off (L0).
1 Low speaker volume (L1).
2 Medium speaker volume (L2) – default.
3 Loud speaker volume (L3).
Undefined.
Register S18 : Duration of Modem Test.
Register S18 sets the amount of time for the modem
tests. The tests can run from 1 to 255 seconds,
depending on the value in this register. This register
has a default value of 0, which turns off the timer and
tests will run until manually terminated.
2,3= 0
1
2
3
Speaker off (M0).
Speaker on until carrier detected (M1) –
default.
Speaker always on (M2).
Speaker on until carrier detected but off
during dialing (M3).
Register S21 : Bit-mapped Register.
Bit-mapped register S21 lets you control certain data
communication control signals.
Bit
4,5,6=0
4
5
6
Hayes™ Smartmodem compatibility (X0).
Include CONNECT XXX responses (X1).
Same as 4 plus dial tone detection (X2).
Same as 4 plus BUSY response and blind
dialing (X3).
7 Same as 6 plus dial tone detection (X4) –
default.
Function
0,1 = x Undefined.
2= x
Undefined.
7= 0
1
3,4= 0 Modem ignores the DTR signal (&D0).
1 Modem enters command mode after ON-toOFF DTR transition (&D1).
2 Modem hangs up after ON-to-OFF DTR
transition (&D2) – default.
3 Modem resets after ON-to-OFF DTR
transition (&D3).
5= 0
1
6= x
7= 0
1
CD signal always on (&C0).
CD signal on when a remote carrier signal is
present (&C1) – default.
Undefined.
Preliminary
Register S23 : Bit-mapped Register.
Bit
1,2,3= 0
2
3
4
5
6
7
4,5= 0
1
2
3
6,7= 0
Long space disconnect turned off (Y0) –
default.
Long space disconnect turned on (Y1).
16
US make/break ratio (&P0) – default.
UK and Hong Kong make/break ratio (&P1).
Function
Use 0-300bps DTE data rate.
Use 1200bps DTE data rate.
Use 2400bps DTE data rate.
Use 4800bps DTE data rate.
Use 9600bps DTE data rate.
Use 19200bps DTE data rate.
Use 38400bps or above DTE data rate.
Use even parity.
Use space parity.
Use odd parity.
Use mark or none parity.
Turn off guard tone (&G0) – default.
Order No. DM336P-002-01
Version : DM336P-AT-P04
AT Command Set
1 Turn off guard tone (&G1).
2 Use 1800 HZ guard tone (&G2).
When there is an inactivity time out
with #CLS=8, the modem always
forces #CLS=0 and #BDR=0.
Register S36 : V.42 negotiation fallback.
Register S25 : Data Terminal Ready Delay.
When Modem is on-line, it will ignore a Data Terminal
Ready signal lasting less than the value of this register.
In this mode, the values for this register are 0 to 255 in
hundredths of a second, and the default value is 0.05
seconds. If you will be entering synchronous mode
after dialing asynchronously, this register determines
how long the modem waits before looking for the Data
Terminal Ready signal. This lets you detach the
asynchronous terminal and connect a synchronous
terminal while remaining in the Data Mode. In this
mode, the values for this register are from 0 to 255
seconds and the default value is 5.
Register S36 defines the type of connection attempted
by the modem and the action to take if the attempt fails:
Bit
2,1,0 = 0
1
2
3
4
5
Register S26 : Request To Send-to-Clear To Send
Delay.
This register affects synchronous operation only and
applies only when you are using the &R0 command.
This register determines how long the modem waits to
turn on the Clear To Send signal after a Request To
Send OFF-to-ON transition in 10 ms increment. The
default value is 1, although this register accepts values
from 0 to 255.
6
7
Value Function
Modem hangs up.
Same as 5.
Reserved.
Same as 7.
Modem tries to connect using V.42
Alternative Protocol (compatible with
MNP levels 2 - 5 ). If handshaking fails,
modem hangs up.
Modem tries to connect using V.42
Alternative Protocol compatible with
MNP levels 2 - 5 ). If handshaking fails,
modem tries to connect using a
standard asynchronous connection.
Reserved.
Modem tries to connect using V.42
Alternative Protocol (compatible with
MNP levels 2 - 5 ). If handshaking fails,
modem tries to connect using a
standard asynchronous connection and
automatic speed buffering -- default.
Register S27 : Bit-mapped Register.
Register S46 : Protocol selection.
Bit-mapped register S27 lets you control modem
transmission mode and line type.
Bit
Register S46 defines the protocol selections specified
for future negotiation.
Function
0
0 : Dial up line (&L0) – default.
1 : 2W Leased line (&L1).
1-7
Undefined.
Value
136
138
Function
LAP-M only.
LAP-M with adaptive data compression –
default.
Register S82 : Break handling
Register S30: Value of the voice inactivity timer.
S30 = 0
Voice inactivity timer off (default).
S30 = 1 - 255 This is the period of time (in sec), which
if expired causes the modem to hang
up the telephone line if it is offhook and
no data has passed during the period.
Preliminary
17
Register S82 specifies the break signal method used
during V.42 applications. The break type to be used
depends on the user application.
Value
3
Function
Expedited break signaling, regardless of its
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AT Command Set
7
128
sequence in data sent and received by each
modem. Data integrity maintained both
ahead of and after the break.
Destructive break signaling, regardless of its
sequence in data sent and received by each
modem. Data not being processed by each
modem at time of break is discarded.
In sequence break signaling as data is sent
and received. Data integrity is maintained
both ahead of and after the break. – default.
Register S95 : Negotiation message options.
< 32
≥ 32
Disable V.42 extended response.
Enable V.42 extended response.
Register S96 : Dial tone/busy tone detect range select.
VALUE RANGE ( Hz )
0
350 - 620
1
2
3
4
425 - 450
440 - 700
350 - 450
375 - 475
5
6
7
8
9
10
150 - 450
270 - 320
350 - 500
375 - 550
350 - 440
110 - 700
COUNTRY
USA, KOREA, TAIWAN,
--default.
BELGIUM.
FRANCE.
ISRAEL, JAPAN.
ITALY, NORWAY,
GERMANY, DENMARK.
NETHERLANDS.
SINGAPORE.
SWEDEN.
SWITZERLAND.
UK.
FULL RANGE.
Register S97 : Energy detection threshold
This register can use in Call Progress Mode (CPM)
mode, for dial tone detect threshold. The default value
is 2. This register determine the detection threshold for
Call Progress (CPM) tones. The default value is 2.
Preliminary
18
Order No. DM336P-002-01
Version : DM336P-AT-P04
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