iRZ ATM2-232 User manual

Operation Manual
GSM modem iRZ ATM2-232

2
Table of Contents
1. Introduction.......................................................................................................................................................5
1.1. About this Document...................................................................................................................................5
1.2. Operating Instructions .................................................................................................................................5
1.3. Terms and Definitions .................................................................................................................................6
2. Product Overview.............................................................................................................................................9
2.1. Product Purpose and Main Functions.........................................................................................................9
2.2. Using the Document..................................................................................................................................10
2.3. Data Transfer Technology.........................................................................................................................11
2.4. Hardware Specifications............................................................................................................................11
2.5. Physical Specifications..............................................................................................................................11
2.6. Electrical Specifications.............................................................................................................................11
2.7. GSM Module Specifications......................................................................................................................12
2.8. Device Functional Circuit...........................................................................................................................12
2.9. Device View...............................................................................................................................................14
2.10. Interfaces.................................................................................................................................................15
2.10.1. Mini USB Connector....................................................................................................................15
2.10.2. DB9 Connector (RS232)..............................................................................................................15
2.10.3. Power Connector.........................................................................................................................17
2.10.4. Terminal Connector (2GPIO+1GPO) ..........................................................................................17
2.11. The Modem Status Indication..................................................................................................................18
2.11.1. Signal Strength Indicators ...........................................................................................................19
2.12. Parameters and Attributes Used.............................................................................................................19
3. SIM Card Installation and Device Mounting.................................................................................................22
3.1. SIM Card Installation.................................................................................................................................22
3.2. Device mounting........................................................................................................................................23
4. Device Operation Description.......................................................................................................................26
4.1. Modem Setup Preparation ........................................................................................................................26
4.2. Device Operating Procedure.....................................................................................................................27
4.3. Service Mode.............................................................................................................................................28
4.4. Offline Mode..............................................................................................................................................28
4.5. Updating Embedded Software (Firmware)................................................................................................32

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4.6. Setting Up the Modem...............................................................................................................................33
4.7. Working with SIM Cards............................................................................................................................33
4.8. Working with a Server ...............................................................................................................................34
4.9. Working with the iRZ Collector Server ......................................................................................................36
4.10. Working without iRZ Collector Protocol...................................................................................................37
4.11. Encapsulation Mode................................................................................................................................37
4.12. Connecting to the Server via SMS Commands.......................................................................................38
4.13. Sending SMS message...........................................................................................................................39
4.14. Data Transmission via CSD....................................................................................................................40
4.15. Watchdog Timers ....................................................................................................................................41
4.16. Real-Time Clock (RTC)...........................................................................................................................41
4.17. GPIO Pins Operation...............................................................................................................................41
4.17.1. Setting Up Pins of an "Input" Type ..............................................................................................41
4.17.2. Setting Up Pins of "Output" Type ................................................................................................43
4.17.3. GPIO Pins Control via SMS Commands.....................................................................................45
4.18. Operating with Incoming SMS Messages ...............................................................................................46
4.19. Modem Operation in the Server Mode....................................................................................................46
4.19.1. Authentication of Connecting Clients...........................................................................................47
4.19.2. Monitoring and Control via iRZ Collector.....................................................................................49
4.19.3. TCP/IP Connection Control.........................................................................................................49
4.19.4. SMS notification on IP Address Change .....................................................................................50
5. Contacts and Support....................................................................................................................................51
List of Tables
Table 2.1 The LLS connector pin assignments....................................................................................................16
Table 2.2 Power connector pin assignments.......................................................................................................17
Table 2.3 Terminal strip connector pin assignments ...........................................................................................18
Table 2.4 LED indication signals..........................................................................................................................18
Table 4.1 Assignments of pins set to input ..........................................................................................................42
Table 4.2 Output operation algorithm ..................................................................................................................44
Table 4.3 Available types of signals in the command mode................................................................................45

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List of Figures
Fig. 1.1 Interaction diagram when using the iRZ Collector software solution –the modem operates in a client
mode.......................................................................................................................................................................7
Fig. 1.2 Interaction diagram when using the iRZ Collector software solution –the modem operates in a server
mode.......................................................................................................................................................................7
Fig. 2.1 ATM functional diagram..........................................................................................................................13
Fig. 2.2 Front panel..............................................................................................................................................14
Fig. 2.3 Back panel ..............................................................................................................................................14
Fig. 2.4 Mini USB Connector................................................................................................................................15
Fig. 2.5 DB9 connector ........................................................................................................................................16
Fig. 2.6 Power Connector ....................................................................................................................................17
Fig. 2.7 Plug terminal connector ..........................................................................................................................17
Fig. 2.8 Signal Strength Indicators (a sample for the strength from 16 to 19 via CSQ).......................................19
Fig. 3.1 Removing the SIM Card Tray from the Modem......................................................................................22
Fig. 3.2 Inserting the SIM card into the tray.........................................................................................................23
Fig. 3.3 The ATM modem drawing dimensions ...................................................................................................24
Fig. 3.4 Device mounting –mounting the modem on a DIN rail on the lateral side.............................................24
Fig. 3.5 Device mounting –mounting the modem on a DIN rail on the lateral side.............................................25
Fig. 3.6 Device mounting –mounting the modem on the wall.............................................................................25
Fig. 4.1 Procedure of selecting a production server ............................................................................................35
Fig. 4.2 The diagram of operation with one server without backup.....................................................................35
Fig. 4.3 The diagram of operation with two servers.............................................................................................36
Fig. 4.4 The Diagram of Operation with Two IP Addresses on One Server........................................................36
Fig. 4.5 Outgoing SMS –structural diagram........................................................................................................39
Fig. 4.6 Methods of gaining remote access to the modem..................................................................................47
Fig. 4.7 Types of client authentication at connection to the server modem.........................................................48
Fig. 4.8 Interaction diagram when using the iRZ Collector software solution –the modem operates in a server
mode.....................................................................................................................................................................49

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1. Introduction
1.1. About this Document
The document contains description and operating procedure of the iRZ ATM2-232 GSM/GPRS modem
(hereinafter referred to as ATM). The document is intended for the users who are in charge of configuration and
maintenance of systems where data is transmitted via this device.
Document version
Firmware version
Hardware Version
Issue Date
3.11
12.0
02
01/02/2016
Written by
Y. Petrova, P. Malikova
Approved by
D. Pavlov, G. Samakova
Also refer to
getting started with the ATM Control application and the modem basic setup –the "Setting Up iRZ ATM
Step by Step. ATM Control" document;
setting up the modem via ATM Control –the "User Guide on the ATM Control Modem Configuration
Utility" document;
setting up the modem via AT commands –the "AT Commands to Set Up the iRZ ATM2-232 Modem"
document;
the benefits of the iRZ Collector special-purpose server –the "iRZ Collector. Solution Overview" docu-
ment;
the use of the iRZ Collector dispatcher application –the "iRZ Collector. Dispatching Software Setup
and Operation User Guide" document.
1.2. Operating Instructions
The modem can interfere with electronic devices; therefore there are the following limitations on its use:
Power off the modem in medical centres and keep it away from medical equipment (for example, cardiac
pacemakers, and hearing aids).
Power off the router in aircraft, take measures against accidental switch-on.
Power off the modem near gas stations, enterprises of chemical industry, in areas where blasting opera-
tions are in progress.
At close range the modem can interfere with television and radio receiver operation.
To ensure safe operation, follow the recommendations:

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Do not expose the modem to aggressive influences (high temperatures, corrosive chemicals, dust, water,
etc.).
Protect the modem from impacts, falls and excessive vibration.
Do not attempt to disassemble or modify the modem. Such actions will void the warranty.
Note! Use the device in compliance with the operating instructions. Damages caused by improper use
and storage of the device are not covered by the warranty.
1.3. Terms and Definitions
Local configuration or updating of firmware –configuration or updating of the modem firmware connect-
ed to a computer via a USB cable. For the ATM modem they are performed via the ATM Control program.
Remote configuration or updating of firmware —configuration or updating of the modem firmware locat-
ed on the site, from the dispatching center. For the ATM modem they are performed via the iRZ Collector dis-
patching application which is used together with the, iRZ Collector server application.
Client modem –the ATM modem operating in the TCP/IP client mode, i.e. the modem is connected to the
data collection server and transmits it data from an external device.
Server modem –the ATM modem operating in the server mode, i.e. the modem waits for incoming connec-
tions and processes them.
The system of data collection and device control (hereinafter referred to as system) –a set of tools for
automated data collection from external devices, located on sites, and their control as well as its processing,
accumulation and transmission.
Server –a computer or specialized computer equipment with the installed server software for processing cli-
ent requests (in the terms of a client-server interaction model).
iRZ Collector solution –IRZ-manufactured software solution including the server and the dispatching appli-
cations of iRZ Collector.
iRZ Collector server application –the iRZ Collector server software to be installed on a data collection
server. It enables a third-party polling software, acting as a client (in the terms of a client-server interaction
model), to receive data from the modems, which also act as clients. That is, the server application serves as a
kind of "layer" enabling their interaction (see Fig. 1.1). For ease of reference, hereinafter the server with the in-
stalled iRZ Collector server application is referred as the iRZ Collector server.
When the ATM modem operates in the server mode, it accepts connections itself: it no longer requires a bro-
ker to interact with the polling software, operating in a client mode. In this case the iRZ Collector solution can
be still used to monitor and control the system modems (see Fig. 1.2).

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Fig. 1.1 Interaction diagram when using the iRZ Collector software solution –the modem operates in a client
mode
Fig. 1.2 Interaction diagram when using the iRZ Collector software solution –the modem operates in a server
mode
The iRZ Collector dispatching application –the iRZ Collector dispatching software which operates to-
gether with the iRZ Collector server application and enables remote monitoring and control of the system mo-
dems. It can be used in the dispatching center or data collection server as well as in any computer with the op-
erating system supporting the application.
External devices’polling software is used in the dispatching center to poll external devices and is provid-
ed by their manufacturer. Generally, it operates in the client mode, and therefore the following two main meth-
ods are used to interact with the modem: First –the modem operates in the client mode, and a special-purpose
"layer" (for example, the iRZ Collector server application) is used to interact with it. Second –the modem oper-
ates in the server mode that enables third-party software to connect it directly. However in the second case
each modem requires an external
1
static IP address.
1
If your company rents an access point (APN) from a mobile network carrier, the modem will use an internal static ad-
dress.

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Dispatching center –data collection and dispatching center intended to poll external devices, installed on
sites, and to monitor and control the system modems.
Data collection server
1
–the server where all the system data is accumulated and processed: both data
from external devices and system service data. The client modems are connected to the data collection server
and transmit the required data, the external device polling software is also connected to the server and re-
quests the data received by the server from the modem.
External device –the device mounted on a site and connected to the modem via the RS232 communica-
tions interface. Heat and energy meters, as well as any systems of telemetry and telemechanics, may operate
as external devices.
SMS command –an SMS message sent to the modem, containing a character-based command of a certain
format.
1
Used if the modem and the external devices polling software operate as clients. If the modem operates in the server
mode, the software can be connected to it directly and read out the required data.

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2. Product Overview
2.1. Product Purpose and Main Functions
The iRZ ATM GSM/GPRS modem provides data transmission over GPRS via TCP/IP protocol stack. The
device is designed for operation in telemetry systems.
The modem can operate in any of the three modes: client, server or CSD only. In the Client mode (hereinaf-
ter –client modem) the modem is connected to the data collection server and transmits data from an external
device. In the Server mode (hereinafter –modem server), the modem, on the contrary, waits for the client in-
coming connection (for example, from a dispatcher computer) on a certain port and processes it. In the CSD
Only mode data is transmitted via CSD (voice channel) with no data transmission over GPRS and the offline
mode available.
For operation in the Client mode you can use any SIM card, for operation in the Server mode it is recom-
mended to use a SIM card with an external
1
static IP address. For operation in the CSD Only mode you can
use any CSD-enabled SIM card.
In the Client and Server modes the modem automatically connects to GPRS. After that the modem estab-
lishes connection to the specified server (if operating in the client mode) or opens an incoming port and waits
for incoming connections (if operating in the server mode).
The device provides transparent communication between a third-party external devices polling software and
an external device connected to the modem via RS232 interface. The modem tracks the GPRS connection sta-
tus and in case of connection loss, the modem restores it (see section "Device Operating Procedure").
The ATM modem supports the use of two SIM cards providing backup mobile access (see section "Working
with SIM Cards").
The client mode supports backup Internet connection –the main server switches to a backup server in case
of disconnection. Switching between servers is also possible with a signal from the modem GPIO pins (see
section "Working with a Server").
The client modem can operate with a standard server (see section "Working with a Server") or a special-
purpose iRZ Collector server. The iRZ Collector server provides transparent data communication between a
third-party polling software, operating as a client, and the modems which also operate as clients and do not
have static IP addresses (see section "Working with the iRZ Collector Server").
The modem supports data transmission via CSD (voice channel). If there is phone number group enabled in
the modem settings, data transmission over CSD is available in the client and server mode. In addition, ATM
supports a separate mode for data transmission only over CSD.
1
If your company rents an access point (APN) from a mobile network carrier, addresses of the sites for such network will
be internal. In this case it is recommended to use a private static address.

10
The modem has additional pins (GPIO) to monitor and control external devices (see section "GPIO Pins Op-
eration"). ATM can send SMS messages at change of pin signal strength enabling remote control of external
devices connected to the modem. The pins state can be changed sending SMS command to the modem ena-
bling remote control of external devices.
The modem features the offline mode supporting all functions except GPRS connection (see section "Offline
mode"). Offline mode provides economy of traffic and power consumption. It is used if there is no need for con-
tinuous connection.
ATM tracks the GSM module hang-up and provides its additional restart by a signal from the configurable
watchdog timer (see section "Watchdog Timers"). GSM module rebooting can be initiated with a phone call
from a group of numbers, specified in ATM Control application (Settings → Advanced→ WDT → Phone No.
for rebooting the module), as well as with the SMS command "XXXX reboot", where XXXX is the access
code for service mode (5492 by default). The modem provides operation within a wide range of input voltages
and temperatures.
During its operation the modem displays messages in the log via USB interface in a real time. To view and
analyse the log on a computer, use any terminal program.
2.2. Using the Document
Modem functions are described in sections "Service Mode", "Offline Mode", "Updating Embedded Software
(Firmware)", "Setting Up the Modem", "Working with SIM Cards", "Connecting to the Server via SMS Com-
mands", "Data Transmission via CSD", "Watchdog Timers", "Real-Time Clock (RTC)", "GPIO Pins Operation",
"Operating with Incoming SMS Messages" can be applied both to "Client" and "Server" modes. In cases
when the action of a function depends on the modem operating mode, it is specified directly in the function de-
scription.
Sections “Working with a Server”and "Working with the iRZ Collector Server " can be applied to Client mode
only; section “Modem Operation in the Server Mode”—can be applied to Server mode only.
In the CSD Only mode the modem cannot operate as a client or a server, data can be transmitted only over
CSD. The CSD Only mode does not support: GPRS connection (including operation with the server), offline
mode, remote firmware updating and settings change as well as the Modbus protocol for a COM port. Other
features are supported in the same way as for the Client and Server modes.

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2.3. Data Transfer Technology
The ATM GSM/GPRS modem supports the following data transmission technologies:
GPRS;
CSD;
SMS.
2.4. Hardware Specifications
ATM has the following hardware specifications:
GSM/GPRS module –BGS2;
Mini USB for setting up and logging the modem operation;
dual SIM card support;
antenna connector –SMA;
communication connector –RS232;
power connector –MicroFit 4;
terminal connector –2 GPIO+ 1 GPO.
2.5. Physical Specifications
ATM has the following physical specifications:
housing dimensions (without connectors) –max 66 × 83 × 25 mm (L × W × D);
product dimensions (with connectors) –max 74 × 83 × 25 mm (L × W × D);
weight, maximum –120 g;
operating temperature: -40°C to +65°C;
storage temperature: -50°C to +85°C;
permissible humidity –the device ensures safe operation at relative humidity of maximum 80% at 25°C.
2.6. Electrical Specifications
Power Supply
Power supply voltage: 7 to 40V (DC)
Current consumption in GPRS mode, maximum:
at power voltage of +12 V –250 mA;
at power voltage of +24 V –125 mA;
Current consumption in the offline mode, maximum:
If set to input, GPIO 2 can work as ADC in current or voltage measurement modes.

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at power voltage of +12 V –60 mA;
at power voltage of +24 V –30 mA.
GPIO 1 and 2 in the "input" mode:
Resistance of the programmable pull-up to power voltage –10 kΩ;
Programmable pull-down resistor –47 kΩ;
Maximum "0" level voltage (low level) –0.8 V;
Minimum "1" level voltage (high level) –2.0 V;
Maximum allowable input voltage –40 V.
GPIO 2 in the “input” mode set as ADC:
Current measurement parameters:
Current measuring range, mA: 0 to 30;
Current measurement error, mA: 0.2.
Voltage measurement parameters:
Voltage measuring range, V: 0 to 40;
Voltage measurement error, V: 0.2.
GPIO 1 and 2 in the "output" mode:
Output type –open collector to ground;
Output resistance –120 Ω;
Maximum output current –10 mA.
GPO 3 in the "output" mode:
Output type –open collector to power voltage;
Output resistance –max 2 Ω;
Maximum output current –500 mA.
2.7. GSM Module Specifications
Bandwidth:
900/1800 MHz;
850/900/1800/1900 MHz (optional)
Transmitter output power:
at frequency of 850/900 MHz –2 W;
at frequency of 1800/1900 MHz –1 W;
2.8. Device Functional Circuit
The modem main components:

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power connector;
voltage converter;
GSM module;
SMA connector for external antenna;
microcontroller (MC);
Mini USB;
RTC module battery;
9-pin RS232 (DB-9);
4-pin terminal connector (GPIO);
4-pin terminal connector (GPIO); SIM1 and SIM2 holders (SIM1 и SIM2);
an operating SIM selection module (SIM selection);
LEDs;
hard reset and signal strength detection button (Firmware key).
Fig. 2.1 ATM functional diagram

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2.9. Device View
The device view is given in Fig. 2.2 and Fig. 2.3.
Fig. 2.2 Front panel
Fig. 2.3 Back panel
The numbers in Fig. 2.2 and Fig. 2.3 illustrate:
1. mini USB connector;
2. SIM 1 tray (SIM 1);
3. SIM 1 tray eject button (SIM 1);
4. SIM 2 tray (SIM 2);
5. SIM 2 tray eject button (SIM 2);
6. SIM 1 LED indication (SIM 1);
7. SIM 2 LED indication (SIM 2);
8. antenna connector;
9. terminal connector (2 GPIO + 1 GPO);
10. DB9 Connector (RS232);

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11. MicroFit 4 power connector;
12. hard reset and signal strength detection button.
2.10. Interfaces
The device is equipped with two serial interfaces: Mini USB and RS232 as well as the GPIO programmable
interface.
2.10.1. Mini USB Connector
The mini USB interface is used to set up the modem and log its operation (log removal). For operation of the
modem via Mini USB, it is required to install the USB driver which can be downloaded from the official website
of the Radiofid System Company (www.radiofid.ru) in "Support" section. The computer determines the modem
as a virtual COM port. The modem is powered via Mini USB interface only for operation in the service mode.
Fig. 2.4 Mini USB Connector
Note 1 USB is used in the "device" mode; therefore it can be used only for connection to a computer or
other host controller.
Note 2 With a terminal program, for example, Hyper Terminal, close a COM port in this program before
you connect a USB cable. After that connect the USB cable. Then open the COM port.
2.10.2. DB9 Connector (RS232)
The connector is used to connect the modem to an external device with the RS232 interface (COM port).
Port factory settings: baud rate –9600, data bits –8, parity –not used, stop bits –1. All the parameters of the
operating COM port are changed in the service mode.

16
Fig. 2.5 DB9 connector
Table 2.1 The LLS connector pin assignments
Pin
Signal
Direction
Function
1
DCD
Modem –device
Carrier Detect
2
RXD
Modem –device
Receive Data
3
TXD
Device –modem
Transmit Data
4
DTR
Device –modem
Data Terminal Ready
5
GND
–
Ground Connected to the negative
terminal of the power supply
6
DSR
Modem –device
Data Set Ready
7
RTS
Device –modem
Request To Send
8
CTS
Modem –device
Clear To Send
9
RI
Modem –device
Ring Indicator
Note! The RS232 (COM port) standard does not allow hot plugging. To prevent damage to the COM port,
wait at least 5 seconds to plug and unplug connected devices after turning off the power.
The DCD, DSR, CTS, RING pins can be set to a high or low state in the encapsulation mode (see section
“Encapsulation mode”) or in the service mode using the ATM Control application. By default, the DCD, DSR,
CTS pins are set to a high state, RING –to a low state.
The modem supports operation with the COM port via the Modbus protocol. There are two protocol imple-
mentations available –Modbus RTU and Modbus ASCII.
Modbus RTU –the packet data protocol used for communication with external devices via RS232, RS485
and RS422. When operating in the GPRS network, overload of base stations might cause data link failure. The

17
modem operating with Modbus RTU prevents data link failure (over 1.5 times character length), i.e. the modem
task is to transmit a single data packet over the RS-232/RS-422/RS-485 interfaces. The Pause option allows
the user to manually set the time interval of data absence, which will enable the modem to identify the end of
data package. Foremost, the Modbus RTU protocol is to be used if an external device operation is based on it.
Specify the Modbus ASCII protocol in the modem settings only if it is recommended to use this protocol by
the manufacturer of the external device.
2.10.3. Power Connector
Microfit 4 connector is used to connect power to the modem.
Fig. 2.6 Power Connector
Table 2.2 Power connector pin assignments
Pin
Signal
Function
1
Not used
2
Not used
3
GND
Negative terminal of power supply voltage
4
+ Uin
Positive terminal of constant power supply voltage. Protected by a
fuse and overvoltage (when applying voltage to input of over 40V)
and reverse polarity protection circuit
2.10.4. Terminal Connector (2GPIO+1GPO)
Fig. 2.7 Plug terminal connector
1
4
3
2

18
Table 2.3 Terminal strip connector pin assignments
Pin (see Fig.
2.7)
Name
Function
1
GPIO3 (GPO)
Power general-purpose output
2
GPIO2/ADC
Configurable general-purpose output
3
GPIO1
Configurable general-purpose output
4
GND
Ground Connected to the negative terminal of the power supply
2.11. The Modem Status Indication
To display the modem operation status, it is equipped with LED indication. The LEDs are placed above the
SIM card trays.
When you turn on the modem, both LEDs light up for 300 ms. In case of the RTC-timer failure, LEDs can
light up for 10 seconds while RTC is being initialized.
At the modem operation the indication is performed via the LED placed above the tray with an active SIM
card (a SIM card operating at a given moment is called active, the second one –inactive). LED signal interpre-
tation is shown in 2.4.
Table 2.4 LED indication signals
Active SIM card indi-
cator
Inactive SIM card in-
dicator
Operating mode
300 ms on / 300 ms off
Off
Module loading, SIM card verification, logging to network
150 mc on/
1500 mc off
Off
Establishing GPRS connection
Solid on
Off
GPRS connection is established, the modem is connect-
ed
Off
Off
No power
Single simultaneous blinking (150 ms on / 150 ms off)
Switching off and restart / switching on
Both LEDs are solid
Service Mode
Both LEDs are blinking (150 ms on / 150 ms off)
SIM cards operation error (PIN code error or no SIM
cards in the trays)

19
2.11.1. Signal Strength Indicators
The ATM modem is equipped with the
1
hard reset button which also designed for detecting the signal
strength of the modem. This feature allows you to find an optimum place to mount the modem antenna on a
site. Signal strength is displayed in the log and indicated by the LED for each SIM card of the modem.
To determine the signal strength, press the button using a thin object and release it. The LEDs indicate the
signal strength within a minute, after that the modem returns to the previous operation mode. With GPRS or
CSD connection established, the connection is terminated by pressing the button, and after the end of signal
verification it is re-established. Signal detection is not supported in the service mode.
When pressing the button, both LEDs light up for 2 sec, after the pause of one second active SIM LED starts
to blink in accordance with signal strength of its SIM card (only if modem is registered in GSM network).
Depending on the CSQ signal strength, the LED of each SIM card blinks certain times:
signal strength is below 9 –1 time;
signal strength is from 9 to 15 –2 times;
signal strength is from 16 to 19 –3 times;
signal strength is from 20 to 24 –4 times;
signal strength is above 24 –5 times;
Each LED blinking lasts for 80 / 400 ms: 80 ms –LED is on, 400 ms –LED is off. The pause of 4 seconds is
followed by LED blinking of certain number of times. After that the modem detects signal level, and the process
is repeated –the LED blinks the number of times corresponding to the CSQ signal strength then follows a four-
second pause –and so until a minute passes from the time the button has been pressed (see the sample in
Fig. 2.8).
Fig. 2.8 Signal Strength Indicators (a sample for the strength from 16 to 19 via CSQ)
2.12. Parameters and Attributes Used
Key Attributes of the ATM2-232 Modem
1. Device model –Automatic Terminal-Modem ATM2-232.
1
The button is placed on the side of the modem with the RS232 connector (see Fig. 2.3). Early models are not equipped
with this button. The hard reset button function is described in section "Updating Embedded Software (Firmware)".

20
2. Software version.
3. Hardware board version.
4. Device name –a unique device name containing 4 characters (digits and Latin letters). It is specified in
each SMS message
1
sent by the modem. The device name is used to distinguish SMS messages from
different modems. Case-insensitive: That is to say aaaa and AAAA –are identical names. Default value
–name.
5. Login –a string of 4–16 characters (digits and Latin letters, case sensitive), unique for each device. It
can be used for the modem authentication on a standard server (not iRZ Collector) if IMEI-based authen-
tication is not sufficient. In addition, it can be used for iRZ protocol-based authentication (for more details,
refer to section “Authentication of Connecting Clients”). By default the modem login is equal to the mo-
dem IMEI value.
SIM Cards Key Attributes
1. Mobile network carrier settings:
APN (Internet access point name);
Login (user name);
Password.
Request for network settings from the mobile operator of your SIM card.
2. PIN code (required if PIN code request is activated on the SIM card)
Key Attributes (for the client modem operation)
1. Server’s IP address –the server IP address to which the client modem is to be connected and transmit
data from an external device. It is required to specify a public static IP address of the data collection
server or network gateway (if the data collection server is in the local network behind the gateway). In the
latter case it is required to set up port forwarding from the gateway IP port to the server data collection IP
port. If you rent an APN from a service provider, it is required to specify the private address of the data
collection server in the IP address field. The address is 4 bytes long, consists of four decimal numbers,
each ranging from 0 to 255, separated by dots. For example, 83.58.124.13
2. Server port is a network port of data collection server where it waits for connection of client modems.
Value –0 to 65000. This port should not be used by other services. If data collection server is located in
the local network behind network gateway, it is required to set up port forwarding from the gateway IP
port to the IP port of the server data collection.
If you plan to use the backup server, it is required to enter its IP address and port and authorize its use.
Key Attributes (for the server modem operation)
1
For example, the modem can send SMS messages in case of GPRS connection loss or on signals from external out-
puts.