Davicom DM562P User manual

Connectivity
Beyond Limits
DAVICOM Semiconductor, Inc.
DM562P
Integrated Data/Fax/Voice/Speakerphone Modem
Operation Manual &
AT Command Set
Version: DM562P-MA-P01
August 20, 2002

DM562P
Operation Manual & AT Command Set
Integrated Data/Fax/Voice/Speakerphone Modem
2Preliminary
Version: DM562P-MA-P01
July 12, 2000
Contents
Chapter 1: Introduction
■Introduction
■Modem Package
■The Data/Fax/Voice/Speakerphone External
Modem
Chapter 2: Installation
■Selecting a Communication Port
■Installing the Modem
■Connecting the Modem to the Telephone Line
■Installing a Software Package
■Checking the Installation
■Initialization String Set-up
Chapter 3: AT commands and S Registers
■Functional States
■Configuration Profiles
■AT Command Syntax
■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
Part III: Voice Command
a. Voice Command
b. Shielded Command
Part IV: S Registers
■Status Register Summary
Chapter 4: Troubleshooting
■Software Settings
■Troubleshooting Procedures

DM562P
Operation Manual & AT Command Set
Integrated Data/Fax/Voice/Speakerphone Modeml
Preliminary 3
Version: DM562P-MA-P01
July 12, 2000
FCC Regulations
FCC part 68: Requirements for End Users
The following FCC rules must be observed when using
the Modem. The modem must not be connected to a
party line (a telephone line shared by two or more
subscribers) or coin-operated telephone. If trouble is
experienced, the modem must be disconnected from
the telephone line to determine the cause of the problem
and may be reconnected only after the problem is
corrected. The modem must not replace your telephone.
There must be at least one telephone connected to your
telephone line. If you have only one telephone wall
outlet, you can satisfy this requirement by connecting
your telephone to the PHONE jack on the modem.
You must notify your local telephone company that you
will be installing an FCC registered device on your
telephone line. If requested, you must provide the
telephone company with the following information:
•The telephone number of the line connected to your
modem.
•The FCC registration number:
•or
•The FCC ID:
•or
•The ringer equivalence number:
FCC Part 15: Radio/TV Interference
The equipment described in this manual generates and
uses radio frequency energy and if not installed and
used properly (that is, in strict accordance with the
manufacturerinstructions) may cause interference to
radio and television reception. This equipment has been
tested and complies with the limits for Class B
computing devices in accordance with the specifications
in Subpart J, Part 15, of FCC rules. These rules are
designed to provide reasonable protection against such
interference in a residential environment. However,
there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause
interference to radio or television, which can be
determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by
one or more of the following measures:
•Reorienting the receiving antenna
•Relocating the modem with respect to the receiver
•Moving the modem away from the receiver
•Plugging the modem into a different outlet so that
the modem and receiver are connected to different
branch circuits.
If necessary, the user should consult the dealer or an
experienced radio/television technician for additional
suggestions. Users may also wish to consult the booklet
ow to Identify and Resolve Radio-TV Interference
Problems” prepared by the Federal Communications
Commission. This booklet is available from the U.S.
Government Printing Office, Washington, D.C. 20402,
Stock No. 004-000-00345-4.
FCC Requirements for Consumer Products
(1) This equipment complies with Part 68 of the FCC
rules. On the side of this equipment is a label that
contains, among other information, the FCC
registration number and Ringer Equivalence
Number (REN) for this equipment. If requested,
provide this information to your telephone company.
(2) The REN is used to determine the quantity of
devices you may connect to your telephone line
such that all of the devices ring when the number is
called. In most, but not all areas, the sum of the
RENs of all devices should not exceed five (5.0). To
be certain of the number of devices you may
connect to your line, as determined by the REN, call
your company to determine the maximum REN for
your calling area.
(3) If your modem causes harm to the telephone
network, the telephone company may discontinue
your service temporarily. If possible, the telephone
company will notify you in advance. If advance
notice is not possible, you will be notified as soon as
possible. You will be advised of your right to file a
complaint with the FCC.
(4) Your telephone company may make changes in its
facilities, equipment, operations, or procedures that
could affect the proper operation of your equipment.

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Operation Manual & AT Command Set
Integrated Data/Fax/Voice/Speakerphone Modem
4Preliminary
Version: DM562P-MA-P01
July 12, 2000
If such changes are planned, you will be given
advance notice so as to give you an opportunity to
maintain uninterrupted service.
(5) If you experience trouble with this modem, contact
your dealer for repair/warranty information. The
telephone company may ask you to disconnect this
equipment from the network until the problem has
been corrected or you are sure that the equipment is
not malfunctioning.
(6) Repairs that customers can make include replacing
fuses or plug-in cards.
(7) This equipment may not be used on coin service
telephones provided by the telephone company.
Connection to party lines is subject to state tariffs.

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Operation Manual & AT Command Set
Integrated Data/Fax/Voice/Speakerphone Modeml
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Version: DM562P-MA-P01
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Chapter 1: Introduction
Introduction
This Data/Fax/Voice/Speakerphone Modem Is a
personal computer external modem, special made for
the RS-232 com port in the IBM compatible Personal
computers. It supports the Plug and Play (PnP) function
to make the installation real easy for you.
As a data modem, it serves as a communication link
between your computer and a remote computer,
allowing you to transmit or receive data over the
telephone lines. And it is compatible with the ITU-T V.90
(56,000 bits per second), ITU-T V.34+ (33,600 bits per
second), CCITT V.32bis, V.32, V.22bis, V.22, V.21, and
Bell 103, 212 standards, and provides line speeds from
56000 bits per second to 300 bits per second. However,
due to FCC rules which restrict power of internet service
provider modem, current download speeds are limited to
53Kbps.
As a Fax modem, it lets you to use your computer as a
fax machine, transmitting documents to and receiving
them from remote fax machines and/or fax modems. It
is compatible with CCITT V.17, V29, V.27ter and Group
3 Fax standards, provides line speeds from 14,400 to
2,400 bits per second, and sends and receives faxes
using class 2 fax commands.
As Voice modem (if hardware supports), it provides the
answer machine functions, recording a voice message,
playing pre-recorded message back, and recording the
message from remote telephone users.
As Speakerphone modem (if hardware supports), it
provides the all functions as Voice modem above and
with external speaker and microphone, it provides user
the hand free and conference speaker phone functions.
The Modem functions as a 56,000 bits per data modem,
a 14,400 bits per second fax modem with 115,200 bits
per second data rate to and from your computer.
This manual explains how to set up and install the
Modem and operates the modem using the AT
command set.
Modem Package
In addition to the modem itself, the modem package
includes the following:
•This user's manual
•A communication software package (including a
manual)
•A RS-232 Cable
•An RJ-11C phone cord
•A setup floppy diskette
•A warranty card
After you unpack the modem, check it for shipping
damage. Rough handling during shipping causes most
early modem failures. If you notice any damage, contact
your dealer.
The Modem
Before reading chapter 2, which describes how to install
the modem, take a moment to examine the jacks on the
rear of the modem.
There are two jacks on the rear of the modem. One is
labeled as "LINE", which is to plug in the supplied RJ-
11C phone cord and the other end is to plug into the
phone jack in the wall. The other jack is labeled as
"PHONE", which is to connect your telephone set to the
modem or your other telephone devices, so that you
may use the same wall jack for both the modem and the
devices you original use without change your original
telephone device setup. Please refer to FCC
Regulations at the beginning of this manual for the
important rules and Ringer Equivalence Number (REN)
information.

DM562P
Operation Manual & AT Command Set
Integrated Data/Fax/Voice/Speakerphone Modem
6Preliminary
Version: DM562P-MA-P01
July 12, 2000
Chapter 2: Installation
This chapter explains how to install your modem and
check whether it is working correctly. To install the
modem you need to perform the following simple steps:
1. Turn off your computer and any attached devices,
such as a printer.
2. Connect the serial cable to the modem and to the
computer. When looking for the serial port on the
back of your computer, look for labels marked
COM1 or COM2.
3. Plug and the power adapter into a standard wall
outlet and insert its plug into the power jack on the
modem.
4. Connect the modem to the telephone line in the wall
jack. If you wish, you may also connect a telephone
set or your telephone devices to the modem through
the "PHONE" jack on the modem.
5. Turn on your modem, then turn on your computer
and Peripherals.
6. Set up your modem.
a. For Windows 95/98 and NT, follow "New
Hardware Found" window to complete the
installation of modem.
b. For other system, please refer to the following
specified procedures.
7. Install a communication software package and
setup the software to operate the modem.
8. Checking the Installation.
Each of these steps is explained in details below.
1. Turn off computer and attached devices.
2. Connect the serial cable
The serial cable may be 9-pin or 25-pin.
3. Plug the power adapter
Warning! Do not use other adapter not offered by
original Manufacturer.
4. Connect the Modem to the Telephone Line
Once the modem is installed in your computer, you are
ready to connect the modem to telephone jack on the
wall. To connect the modem to the telephone line, plug
one end of provided RJ-11C phone cord in the modem
package into the jack, marked as "LINE" jack on the
bracket of the modem, and the other end of phone cord
to the phone jack in the wall.
If you wish, you may connect a telephone set or your
telephone devices to the modem so that both modem
and your telephone devices are connected to a single
wall jack. To connect your telephone devices to modem,
simply plug the modular phone cord of your telephone
devices into the "PHONE" jack on the bracket of the
modem.
5. Turn on the modem and PC
6. Setup your modem
6.a Windows 95 or Windows NT
If your system OS is either Windows 95/98 or
Windows NT, after the step 7, Power up your
computer, you will notice that your computer display
"New Hardware Found" window to prompt you to
setup the new hardware, namely, modem. Follow
the prompt and choose "Have Disk" option, insert
the floppy diskette in the package in the drive and
select that drive. Click OK. your modem is
automatically set up.
6.b Windows 3.x or DOS
1. If your system is not provide the Plug and Play
(PnP) functions, such as Windows 3.x or DOS,
the COM port is decided by the com port you
connected
7. Installing a Software Package
Once you have the external modem, you can install a
communication software package on your computer. ( A
software package is provided with the modem. Of cause
you may use a different software package of your
choice.) You will need the communication software to
operate the modem. (The modem may also be operate
by using the AT commands, described later in this
manual.)
When configuring the software applications, take note of
the following:
1. The setting for "baud rate" in the software
application should be set to 115,200, the highest
supported by the modem. Unless you have special
reason not to. This setting refers to DTE speed ( the
speed with which your computer communicates with
the modem), not the speed of the modem supported
for connection with other modems.
2. Select "RTS?CTS" or "hardware " flow control
handshaking in the software application. This will
guarantee the sent data and received data can be
handled by your computer, without lose any of data.

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Integrated Data/Fax/Voice/Speakerphone Modeml
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3. If you are using Microsoft Windows, check the port
parameters in the Control Panel. Select "hardware"
and the appropriate baud rate.
4. If you are using a software package other than the
one included with your modem and the name of your
modem does not appear on the modem list in the
software, choose either "generic" or "Hayes
compatible" for the type of modem. Select "error
correction" if it is available.
8. Checking the Installation
If you have a telephone set connected to the modem,
pick up the receiver and check whether you hear a
normal dial tone. If you do not, confirm that the wall line
is properly connected to the modem and that the
telephone set is plugged securely into PHONE jack on
the modem.
You may like to check the modem is properly set up or
not. Here is what you have to do.
8.a Windows 95/98 or Windows NT
1. Click START,
2. Move mouse to SETTINGS,
3. Click on CONTROL PENAL,
4. Double click on the MODEMS icon,
5. MODEMS PROPERTIES shows up,
6. Select GENERAL tab, you should see the new
modem is added to the list.
7. Select DIAGOSTICS tab, you will see the new
modem is list on one of the port.
8. Close MODEMS PROPERTIES,
9. Close CONTROL PENAL,
10. Click START again,
11. Move mouse to PROGRAMS, ACCESSORIES,
HYPER TERMIANL,
12. Double click HYPERTRM.EXE,
13. NEW CONNECTION - HYPER TERMINAL and
CONNECTION DESCRIPTION windows show
up,
14. Follow the prompt to make your first connection.
8.b Windows 3.x or DOS
Run the communication software provided with the
modem. Put the computer in terminal emulation
mode, so that the computer functions as a terminal.
To check whether your computer and modem are
communicating properly, either enter "AT" and
carriage return. The modem should respond by
displaying the letters "OK" one the computer screen.
If the modem does not respond or if the software
can not enter terminal mode, the communication
port setting of modem may conflict with that of
another serial device in your system. In this case,
you will need to adjust the settings to different one.
If the "AT" is not displayed when you type it, the local
echo function may be off. To turn it back on, type
"ATE1" and carriage return.
If double characters appear on the screen, both your
modem and software are set to local echo on; in this
case disable the local echo function in your software
application, or you can type "ATE0" and carriage
return to turn the modem's local echo off.
If you suspect a problem with modem or the
telephone line after installation, disconnect the
modem until you determine the source of the
problem.
Initialization String Set-up
The following initialization string is suitable for most
applications. You may make additions as appropriate.
AT &F E0 V1 &D2 &C1 \V1 S0=0 <cr>
Note:
a. Some application program does not allow for
spaces between commands.
b. Some application program may have to replace
carriage return to ^M or a\ to the end of string.
c. Some commercial service nodes do not like data
compression. If you do not connect or connections
is sluggish, include %C0 to disable the data
compression.

DM562P
Operation Manual & AT Command Set
Integrated Data/Fax/Voice/Speakerphone Modem
8Preliminary
Version: DM562P-MA-P01
July 12, 2000
Chapter 3: AT commands and S Registers
Functional States
Configuration Profiles
AT Command Syntax
AT Command Summary
AT Command set
Status Register Summary
AT Command Set Result Codes
Example
Other Important Settings
The modem supports an extended Hayes AT command
set that allows you to adjust the modem's operating
parameters and initiate calls. This chapter describes
how to operate the modem from a personal computer or
a terminal keyboard using AT commands.
Functional States
In AT command operating environment, the modem has
four functional states:
The command state,
The wait-for-carrier state,
The on-line state, and
The on-line command state.
In the command state, the modem accepts AT
commands form the terminal, allowing you to configure
the modem and dial telephone numbers. When the
modem is powered on, it defaults to the command state.
After modem dials a number, it enters a transition state,
called the wait-for carrier state and waits for a carrier
signal from the remote modem. If the modem does not
detect a carrier signal within a preset time period (this
period is defined by the value of S7 register), it
abandons the call and re-enters the command state.
You can also cause the modem to exit the wait-for-
carrier state and return to the command state by
pressing any key on the keyboard, causing a dial abort
action.
If modem detects a valid carrier signal, it connects with
the remote modem, according to the best negotiation
speed decided by both modems, and enters the on-line
state. In this case, the modem transmits data
asynchronously. If the carrier signal is lost or
intentionally dropped the connection, the modem hangs
up and re-enters the command state.
While the modem is on line, you can temporarily exit the
on-line state, and enter the on-line command state, from
which limit set of AT commands can be entered to
interrogate the modem current settings and make sure
the connection is what is supposed to be and to
disconnect the line gracefully.
To enter the on-line command state, wait 1 second, type
+++, wait another 1 second, and type AT, carriage return
(this procedure is called Time Independent Escape
Sequence, TIES). The first valid AT commands entered
while the modem in the on-line command state will be
executed just as they would be executed in the
command state. If the first command is Invalid in this
state, it will cause modem be to on-line state and you will
have on-line connect message shown on the screen.
After the first command is accepted and in the on-line
command state, the rest AT commands will accepted
with OK or rejected with ERROR and stay in this state
until
1. You issue ATO command to re-enter the on-line
state,
2. You issue ATH to drop the connection and back to
command state,
3. Connection is disconnected and the modem go
back to command,
4. Application program request modem to disconnect
and go back to command state.
Configuration Profiles
A configuration profile refers to a complete set of
operation parameters for the modem. The operating
parameters in use at any one time are referred to as
active profile. The active profile is stored in RAM in the
modem and it may be viewed by entering AT&V. Each
time the modem powers up, the active profile is loaded
with profile 0 or 1 at the time modem was last powered
off
You can store the active profile into profile 0 or profile 1
and into the non-volatile memory (EEPROM) by entering
AT&W0 or AT&W1. So next time the modem is powered
up, you can assume the profile while you left off.
The factory default profile, which is stored in ROM in the
modem, consists of the operating parameters most
commonly used for data communication and is
satisfactory for the needs of most users. The default
profile can be reload into active profile by entering AT&F.

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Operation Manual & AT Command Set
Integrated Data/Fax/Voice/Speakerphone Modeml
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Version: DM562P-MA-P01
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AT Command Syntax
With two exceptions, all AT commands are prefixed with
AT (uppercase or lowercase, even, odd, none, mark or
space parity do not matter), which stands for
"ATtention", command body, list in the following
sections, and command line terminator, most commonly
used is carriage return.
The two exceptions are the "A/" command, which is
used to repeat the last command, and the "+++", which
cause modem goes into on-line command state.
There are 40 characters length limitation post on every
single command line. Any command line exceeds this
limitation will result an ERROR result.

DM562P
Operation Manual & AT Command Set
Integrated Data/Fax/Voice/Speakerphone Modem
10Preliminary
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.
AManually answer incoming call.
DDial (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

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Integrated Data/Fax/Voice/Speakerphone Modeml
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Vn Responses Selection.
V0 Numeric responses.
V1* Verbose (text) responses.
Wn DTE/DCE Speed Response Selection.
W0 Display DCE connection rate
W1* Display DTE connection rate
Xn Response Set Selection (See table 1).
X0 Report basic call progress result codes.
X1 Report basic call progress result code and
connection speeds, disable dial tone and
busy tone detection.
X2 Report basic call progress result code and
connection speeds, disable busy tone detection
only.
X3 Report basic call progress result codes and
connection speeds, disable dial tone detection
only.
X4* Report all call progress result code and
connection rate.
Yn Long Space Disconnect Selection.
Y0* Disables long space disconnect. Modem does
not send or respond to long space disconnect.
Y1 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.
Zn Reset and Profile Retrieve Selection
Z0* Reset modem and retrieve active configuration
profile from stored configuration profile 0.
Z1 Reset modem and retrieve active configuration
profile from stored configuration profile 1.
&Cn Carrier Output Selection.
&C0 Keep Data Carrier Detect (DCD) signal always
ON.
&C1* Set Data Carrier Detect (DCD) signal according
to remote modem data carrier signal.
&Dn Data Terminal Ready (DTR) Signal Handling.
&D0 Modem ignores the Data Terminal Ready signal
from host.
&D1 Modem returns to Command Mode and
asynchronous operation following an ON-to-
OFF Data Terminal Ready transition.
&D2* Modem hangs up, returns to the Command
Mode, and prepares for asynchronous
operation following an ON-to-OFF Data
Terminal Ready transition.
&D3 Modem resets following an ON-to-OFF Data
Terminal Ready transition and retrieves modem
default configuration (Same as ATZ).
&Fn ROM code / Factory Default setting.
&F0 Load Modem Factory Default Configuration
Restores the modem to the default operating
characteristics.
&F9 Load Modem ROM code Default Configuration
Restores the modem to the default operating
characteristics.
&Kn Flow Control Selection.
&K0 Disable Local flow control.
&K3* Selects RTS\CTS hardware flow control.
&K4 Selects XON\XOFF in-band flow control.
&K5 Selects Transparent XON\XOFF in-band flow
control.
&Ln Dial-up or Leased-Line Operation Selection.
&L0* Modem is setup for dialup operation.
&L1 Modem is setup for 2-wire leased-line operation.
&Pn Make/Break Ratio.
&P0* US setting for off-hook (make) to on-hook
(break) ratio.
&P1 UK and Hong Kong setting for off-hook to on-
hook ratio.
&Rn Clear To Send (CTS) Signal Selection.
&R0 Modem turns on the Clear To Send signal when
it detects the Request To Send (RTS) signal
from host.
&R1 Modem ignores the Request To Send signal
and turns on its Clear To Send signal when
ready to receive data.
&R2* Clear To Send force on.
&Sn Data Set Ready (DSR) Signal Selection.
&S0* Data Set Ready is forced on.
&S1 Data Set Ready to operate according to RS- 232
specification.
&Tn Test Selection.
&T0* Terminates test in progress.
&T1 Performs Local Analog Loopback Test.
&V Configuration Profile Display Selection.
&Wn Active Configuration Profile Store Selection.
&W0* Stores active configuration profile in
configuration profile 0.

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&W1 Stores active configuration profile in
configuration profile 1.
&Yn Selection of the Active Configuration After
Power-On or Reset.
&Y0* Retrieves configuration profile 0 as the active
configuration profile when the Modem is turned
on or is reset.
&Y1 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 Adaptive Handshake Selection.
*G0 Disables adaptive protocol handshake.
*G1* Enables adaptive protocol handshake.
*Nn Connect Speed Selection.
*N0 Selects connect speed 1200bps.
*N1 Selects connect speed 2400bps.
*N2 Selects connect speed 4800bps.
*N3 selects connect speed 7200bps.
*N4 Selects connect speed 9600bps.
*N5 Selects connect speed 12000bps.
*N6 Selects connect speed 14400bps.
*N7 Selects connect speed 16800bps.
*N8 Selects connect speed 19200bps.
*N9 Selects connect speed 21600bps.
*N10 Selects connect speed 24000bps.
*N11 Selects connect speed 26400bps.
*N12 Selects connect speed 28800bps.
*N13 Selects connect speed 31200bps.
*N14 Selects connect speed 33600bps.
*N15 Selects connect speed 1200/75bps.
*N16 Selects connect speed 300bps (V.21).
*N17 Selects connect speed 300bps (Bell 103).
*N19* Selects connect speed V.90 33333bps
*N22 Selects connect speed V.90 37333bps
*N25 Selects connect speed V.90 41333bps
*N26 Selects connect speed V.90 42666bps
*N27 Selects connect speed V.90 44000bps
*N28 Selects connect speed V.90 45333bps
*N29 Selects connect speed V.90 46666bps
*N30 Selects connect speed V.90 48000bps
*N31 Selects connect speed V.90 49333bps
*N32 Selects connect speed V.90 50666bps
*N33 Selects connect speed V.90 52000bps
*N34 Selects connect speed V.90 53333bps
*N35 Selects connect speed V.90 54666bps
*N36 Selects connect speed V.90 56000bps
*Pn User Abort Selection.
*P0* Enable user abort feature.
*P1 Disable user abort feature.
*Qn Auto Retrain Selection.
*Q0 Disables auto retrain.
*Q1* Enables auto retrain.
*Tn Trellis Coding Selection.
*T0 Disable Trellis Coding.
*T1* Enable Trellis Coding.
*Xn Transmission Level Selection.
*X0* Selects output level -11dBm.
*X1 Selects output level -12dBm.
*X2 Selects output level -13dBm.
*X3 Selects output level -14dBm.
*X4 Selects output level -15dBm.
*X5 Selects output level -16dBm.
*X6 Selects output level -17dBm.
*X7 Selects output level -18dBm.
*X8 Selects output level -19dBm.
*X9 Selects output level -20dBm.
*X10 Selects output level -21dBm.
*X11 Selects output level -22dBm.
*X12 Selects output level -23dBm.
*X13 Selects output level -24dBm.
*X14 Selects output level -25dBm.
*X15 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).
%Cn Data Compression.
%C0 Disables data compression.
%C1* Enables data compression.
\An MNP Block Size Selection.
\A0 Selected 64-character maximum block size.
\A1 Selected 128-character maximum block size.
\A2 Selected 192-character maximum block size.
\A3* Selected 256-character maximum block size.
\Bn Set Line Break.

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Send a n/10 seconds line break to the modem
(n = 0 to 9). Default = 3. Break length always
300 msec for MNP mode.
\En Normal Mode Data Echo Selection.
\E0* Disables data echo during a normal link.
\E1 Enables data echo during a normal link.
\Jn DTE Baud Rate Adjustment Selection.
\J0* Disables DTE rate adjustment. DTE rate is
constant regardless of data link speed.
\J1 Enables DTE rate adjustment. DTE matches
data link speed
\Kn Break Control Selection.
\K0 Enters the Command Mode, but does not send
a Break to remote modem. (To send a Break
after use the \B command).
\K1 Empty data buffers and immediately sends a
Break to remote.
\K2 Same as AT\K0.
\K3 Immediately send a Break.
\K4 Same as AT\K0.
\K5* Send a Break in sequence with any data
received from host.
\Nn Data Link Selection.
\N0 Selects Normal data link.
\N1 Selects Direct data link.
\N2 Selects MNP Reliable link only.
\N3 Selects MNP Auto-reliable link.
\N4 Selects V.42 reliable link with phase detection.
\N5* Selects V.42 auto-reliable link with phase
detection.
\N6 Selects V.42 reliable link without phase
detection.
\N7 Selects V.42 auto-reliable link without phase
detection.
\Qn Flow Control Selection.
\Q0 Disables flow control.
\Q1 Selects XON\XOFF in-band flow control.
\Q2 Selects CTS hardware flow control.
\Q3* Selects RTS\CTS hardware flow control.
\Tn Set Inactive Timer.
Set inactivity timer to n minutes (n = 0 to 90).
Default = 0.
\Vn V42/MNP Extended Response Selection.
\V0 Disables V42/MNP extended responses.
\V1* Enables V42/MNP extended responses.
\Xn XON\XOFF Pass-through Selection.
\X0* Process XON\XOFF and don't pass through.
\X1 Processes XON\XOFF and pass through.
PTT Command Set
%Sn PTT country code select

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Result Code (Table 1)
Long Form Short Form n value in
ATXn
0 1 2 3 4
OK 0 x x x x x
CONNECT 1 x x x x x
RING 2 x x x x x
NO CARRIER 3 x x x x x
ERROR 4 x x x x x
CONNECT 1200 5 x x x x
NO DAILTONE 6 x x
BUSY 7 x x
NO ANSWER 8 x x
CONNECT 600 9 x x x x x
CONNECT 2400 10 x x x x
CONNECT 4800 11 x x x x
CONNECT 9600 12 x x x x
CONNECT 7200 13 x x x x
CONNECT 12000 14 x x x x
CONNECT 14400 20 x x x x
CONNECT 19200 21 x x x x
CONNECT 38400 22 x x x x
CONNECT 57600 23 x x x x
CONNECT 115200 24 x x x x
CONNECT 1200RX/75TX 25 x x x x
CONNECT 75TX/1200RX 26 x x x x
RINGBACK 27 x x x x
CONNECT BELL 300 28 x x x x
CONNECT V21 29 x x x x
( Display DCE speed by ATW0 )
CONNECT 16800 15 x x x x
CONNECT 19200 16 x x x x
CONNECT 21600 17 x x x x
CONNECT 24000 21 x x x x
CONNECT 26400 30 x x x x
CONNECT 28800 31 x x x x
CONNECT 31200 32 x x x x
CONNECT 33600 33 x x x x
CONNECT 28000 34 x x x x
CONNECT 29333 35 x x x x
CONNECT 30666 36 x x x x
CONNECT 32000 37 x x x x
CONNECT 33333 38 x x x x
CONNECT 34666 39 x x x x
CONNECT 36000 40 x x x x
CONNECT 37333 41 x x x x
CONNECT 38666 42 x x x x
CONNECT 40000 43 x x x x
CONNECT 41333 44 x x x x
CONNECT 42666 45 x x x x
CONNECT 44000 46 x x x x
CONNECT 45333 47 x x x x
CONNECT 46666 48 x x x x
CONNECT 48000 49 x x x x
CONNECT 49333 50 x x x x
CONNECT 50666 51 x x x x
CONNECT 52000 52 x x x x
CONNECT 53333 53 x x x x
CONNECT 54666 54 x x x x
CONNECT 56000 55 x x x x

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PART II : FAX Command
Fax Class 1 Command
+FCLASS=n Data, Fax or Voice Mode Selection.
+FCLASS=0 Selects Data mode operation.
+FCLASS=1 Selects Fax Class 1 mode operation.
+FCLASS=8 Selects voice mode operation.
+FAE=n Data/Fax Auto answer.
+FAE=0 Disables Fax Auto Answer operation
+FAE=1 Enables Auto detection of Data or Fax
operations.
+F<command>? Report active configuration.
+FAE? 0 if auto answer is disabled;
1 if auto answer is enabled
+FCLASS? 0 if wet select data mode;
1 if wet select Fax class 1 mode;
8 if wet select voice mode;
+F<command>? Report operating capabilities.
+FAE=? 0,1
+FCLASS=? 0,1,8
+FTM=? 24,48,72,73,74,96,97,98,121,122,145,146
+FRM=? 24,48,72,73,74,96,97,98,121,122,145,146
+FMI? Request Manufacturer Information.
+FMM? Request Model Information.
+FREV? Request Revision Information.
+
+FTS=n Stop transmit and wait for the specified
amount of time and then sends OK
result code to the DTE.
+FRS=n This command causes the DCE to
listen and to report back an OK result
code when silence has been present on
the line for the amount of time specified.
+FTM=n Transmit data using the modulation
defined below. An ERROR response
code results if this command is issued
while the modem is on-hook.
+FTM=24 V.27 ter 2400bps
+FTM=48 V.27 ter 4800bps
+FTM=72 V.29 ter 7200bps
+FTM=73 V.17 ter 7200bps long
+FTM=74 V.17 ter 7200bps short
+FTM=96 V.29 ter 9600bps
+FTM=97 V.17 ter 9600bps long
+FTM=98 V.17 ter 9600bps short
+FTM=121 V.17 ter 12000bps long
+FTM=122 V.17 ter 12000bps short
+FTM=145 V.17 ter 14400bps long
+FTM=146 V.17 ter 14400bps short
.
+FRM=n Receive data. An ERROR response
code results if this command is issued
while the modem is on-hook.
+FRM=24 V.27 ter 2400bps
+FRM=48 V.27 ter 4800bps
+FRM=72 V.29 ter 7200bps
+FRM=73 V.17 ter 7200bps long
+FRM=74 V.17 ter 7200bps short
+FRM=96 V.29 ter 9600bps
+FRM=97 V.17 ter 9600bps long
+FRM=98 V.17 ter 9600bps short
+FRM=121 V.17 ter 12000bps long
+FRM=122 V.17 ter 12000bps short
+FRM=145 V.17 ter 14400bps long
+FRM=146 V.17 ter 14400bps short
+FTH=n Transmit data with HDLC framing. An
ERROR response code results if this
command is issued while the modem is
on-hook. +FTH > 3 is available when
V.34 mode.
+FTH=3 V.21 channel 2 300bps
+FTH=24 V.27 ter 2400bps
+FTH=48 V.27 ter 4800bps
+FTH=72 V.29 ter 7200bps
+FTH=73 V.17 ter 7200bps long
+FTH=74 V.17 ter 7200bps short
+FTH=96 V.29 ter 9600bps
+FTH=97 V.17 ter 9600bps long
+FTH=98 V.17 ter 9600bps short
+FTH=121 V.17 ter 12000bps long
+FTH=122 V.17 ter 12000bps short
+FTH=145 V.17 ter 14400bps long
+FTH=146 V.17 ter 14400bps short

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Version: DM562P-MA-P01
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+FRH=n Recevie data with HDLC framing. An
ERROR response code results if this
command is issued while the modem is
on-hook. +FRH > 3 is available when
V.34 mode.
+FRH=3 V.21 channel 2 300bps
+FRH=24 V.27 ter 2400bps
+FRH=48 V.27 ter 4800bps
+FRH=72 V.29 ter 7200bps
+FRH=73 V.17 ter 7200bps long
+FRH=74 V.17 ter 7200bps short
+FRH=96 V.29 ter 9600bps
+FRH=97 V.17 ter 9600bps long
+FRH=98 V.17 ter 9600bps short
+FRH=121 V.17 ter 12000bps long
+FRH=122 V.17 ter 12000bps short
+FRH=145 V.17 ter 14400bps long
+FRH=146 V.17 ter 14400bps short
The Fax class 1 mode Result codes are:
OK Command valid and executed successfully.
ERROR Command error and can not be
executed.
CONNECT The DCE has entered the data transfer
state.
NO CARRIER The selected carrier is not being
received. Possible causes include –
loss of carrier within default or DTE
specified time-out, time-out associated
with the absence of selected carrier, or
character abort.

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Integrated Data/Fax/Voice/Speakerphone Modeml
Preliminary 17
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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 Caller ID Selection.
#CID Returns the current settings of #CID.
#CID=0* Disable Caller ID.
#CID=1 Enables formatted Caller ID reporting
Single Data Message (SDM) and
Multiple Data Message (MDM) packets.
#CID=2 Enables unformatted Caller ID
reporting of 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.
#SPK=m,n,o Speaker Phone Control
m=0 speaker phone mode
m=1 microphone modem
n,o dummy parameters
#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
#VBQ? Query Buffer Size. (Response 20)
#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.
#VBS=8 Selects 8 bits per sample ADPCM.
#VBT Beep Tone Timer.
#VBT? 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 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=5 This command enables the microphone
and speaker interface, use for speaker
phone mode.
#VLS=6 This command enables the microphone
and speaker interface, use for speaker
phone mode.
#VRX Set Voice Receive Mode
This action command is only valid if the modem
is in the on-line voice command mode.
#VSP Set Silence detection Period. (0 - 255)
#VSS Silence Detection Enable/Disable
#VTS Play DTMF/Tone String.
#VTS=m,n,o Send Beep Tone for 1 sec
m,n,o are dummy parameters

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18Preliminary
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July 12, 2000
#VTS=p,q Send DTMF ‘p’ for ‘p’*100ms where p
ranges from 0 to 9, or from a to F,
q ranges from 0 to 255.
#VTX Set Voice Transmit Mode
This action command is only valid if the modem
is in the on-line voice command mode.
#VRA Ringback Goes Away Timer
#VRN Ringback Never Came Timer
#VSD Silence Detection Enable/Disable
#VSK Buffer Skid Setting
#VSR Sampling Rate Selection
#VTD DTMF Tone Report Capability
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
<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.

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Operation Manual & AT Command Set
Integrated Data/Fax/Voice/Speakerphone Modeml
Preliminary 19
Version: DM562P-MA-P01
July 12, 2000
PART IV: S Registers
Register S0: Auto Answer Ring.
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).
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.
Register S6: Dial Tone Wait Time.
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
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.
Register S7: Remote Carrier Signal Wait Time.
Register S7 decides how many seconds to wait for a
remote modem's carrier signal before hanging up. The
default value is 60 seconds. You can change it to a value
between 1 and 255 seconds. Register S7 also controls
the time-out of the W command.
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

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the remote modem's carrier signal. If you want your
modem to ignore the Carrier Detect status and act as if
the remote modem's carrier signal is always present, set
the value to 255.
Register S11: Touch Tone Dialing Duration.
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.
Note: Register S11 has no effect on pulse dialing, which
is fixed at 10 pulses per second.
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 Function
0 = x Undefined.
1 = 0 Do not echo command (E0).
1 Echo command (E1) – default.
2 = 0 Responses appear (Q0) – default.
1 Responses do not appear (Q1).
3 = 0 Numeric responses (V0).
1 Verbose (Verbal) Responses (V1) – default.
4 = x Undefined.
5 = 0 Use touch-tone dialing method (T) – default.
1 Use pulse dialing method (P).
6 = x Undefined
7 = 0 Answer incoming calls (A)
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.
1 Local analog loop back test on (&T1).
1 = x 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.
Register S21: Bit-mapped Register.
Bit-mapped register S21 lets you control certain data
communication control signals.
Bit Function
0,1=x Undefined.
2 = x Undefined.
3,4= 0 Modem ignores the DTR signal (&D0).
1 Modem enters command mode after ON-to-
OFF 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 CD signal always on (&C0).
1 CD signal on when a remote carrier signal is
present (&C1) – default.
6 = x Undefined.
7 = 0 Long space disconnect turned off (Y0) – default.
1 Long space disconnect turned on (Y1).