AMC IT-2000 User manual

www.amcelettronica.com IT-2000
IT-2000
TELEPHONE GSM INTERFACE
TECHNICAL MANUAL
(ENGLISH)
DESCRIPTION
The IT-2000 GSM interface simulates a traditional telephone line (PSTN) using a GSM system module.
It can be used as telephone backup system when a PSTN line is out of order or is not available: in these
conditions, or if the interface is properly configured, a call from an external unit is forwarded through the
GSM network. Besides, in the previous conditions, an incoming call from GSM network, generates a ring for
the external unit.
The system is completely transparent to SIA FSK and CONTACT ID protocols signals; it also provides sy-
stem status and lifetest O.C. outputs .
Using SMS commands IT-2000 can be remotely configured and can generate system informations.
AUTOMATIC SMS MESSAGES
IT-2000 handles incoming and outgoing SMS messages.
Incoming messages are used to configure the system.
Outgoing messages can be answers to commands or the following event-generated (if enabled) messa-
ges:
ID Default Text1Description
1 LIFE TEST Programmable life test: sent periodically according to the configu-
ration
2 LOW BATTERY Battery fail (the battery status is tested every 15 minutes)
3 GSM NO LINE GSM fail: this message is sent as soon as the GSM network becomes
available after a programmable out of service time
4 PSTN FAILURE PSTN line FAIL: if the PSTN line is not available this message must
be disabled
5 “Sender ID”:received
text2
SMS echo function: this function forwards each incoming not reco-
gnized SMS (e.g.: SIM card expiry, credit exhaustion, etc.)
6 GSM:OK LEV :3
PSTN:FAIL
BATT:OK
After detecting a ring from the GSM network, the system checks if the
calling telephone number belongs to the adrress book and, if yes, it
answers with a message containing the system status.
This message doesn’t need to be associated to a specific telephone
number of the address book.
1) The text of the first 4 messages can be changed
2) The echo function returns the message received by the system preceeded by the sender id.
This function also allows to monitor improper access attempts
A SMS message is sent if the relevant event occurs and if it has been previously associated at least to a
telephone number (8 telephone numbers may be stored in the system): by default, all messages are asso-
ciated to the first telephone number of the address book.
COMPLIANT
EN 50136-1-1 EN 50136-2-1+A1
ATS 2

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BOARD LAYOUT, TERMINALS AND CONNECTIONS
LAYOUT
ATTENTION: introduce a SIM card with no data stored in its memory (no tele-
phone numbers in address book and no text messages).
The SIM card insertion and extraction operations must be done with the inter-
face completely devoid of power.

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LED FUNCTION
The following 3 LEDs provide systems status informations:
YELLOW
GSM
STATUS
This LED gives the GSM link status: after startup this LED blinks to indicate that the system
is trying to login the GSM network.
Once logged the LED is turned OFF if the PSTN line is available and is turned to a steady
ON status is the PSTN line is not available.
When the system is working on the GSM network (outgoing call or SMS or incoming SMS)
the LED blinks.
GREEN
GSM
SIGNAL
LEVEL
This LED indicates the GSM signal strength. At system startup it blinks together with the yel-
low LED then it blinks according to the GSM signal strength:
1 blink and 1 pause: signal absent or too weak (if this condition is stable it is
reccomended not to use this system)
2 blinks and 1 pause: sufficient signal
3 blinks and 1 pause: good signal
RED
SYSTEM
STATUS
This LED blinks when a system failure occurs (GSM out of order or network not available,
SIM card locked, low battery level). If the problem is related to GSM network the RED and
the YELLOW LEDs will blink simultaneously.
NOTE: the battery status can be tested only when the voltage on the terminals “SUPPLY” is
absent.
SUPPLY + - 13.8Vdc power supply
GSM
Force
IN COM When terminal “IN” is closed to terminal “COM”, all outgoing calls are
forwarded to the GSM network even if the PSTN line is available.
Remark: in this case, an incoming call from the PSTN line will not be received and the
system will result in the free condition but will not generate any ring to the connected
alarm unit
LINE L1 L2 Connections to the PSTN line
PHONE T1 T2 PSTN simulated line terminals to connect to the alarm system
TAMPER The terminal are directly connected to the TAMPER on-board switch
GSM FAIL O.C. output active when the GSM line is not available
PSTN FAIL O.C. output active when the PSTN line is not available
BATT FAIL O.C. output active when the battery is discharged
LIFE TEST O.C. output for life test signal
KEY SW1 parameters reset key
JP5 Nou used
Note: the O.C. outputs when active give a ground voltage
TERMINALS DESCRIPTION

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PROGRAMMING AND MANAGEMENT WITH SMS TEXT MESSAGES
USE OF THE SMS TEXT MESSAGES FOR REMOTE PROGRAMMING
As already explained, IT-2000 is completely configurable by means of SMS text messages.
To program the system, the user must send a text message suitably formatted.
A command can be composed by more fields separated by a space character: each field is composed by a
command id, an optional command index, an operator and a value (ID[.index]operator[value])
The first field of a command text must be the password declaration in order to authenticate the user access
(e.g.; PWD:000000) .
The following operators are recognized by the system:
Operator Name Example
: Declarator PWD:111111 This statement declares the password value
= Assignment TEL.3=1234 This statement assignes the 123456 value to the third phone
number
? Request PFX? This statement asks the system to return the PFX parameter
value
After receiving a SMS, the system will execute the command(s) and will answer with a SMS containing the
result of each single command.
For example, after receiving the “PWD:000000 TEL1.1=24 “ SMS, the “PWD:OK TEL.1:OK” SMS will be
returned.
A wrong field will be answered with the *FAIL* indication while a not recognized field will be answered with
the *?* indication.
Commands are CASE UNSENSITIVE and may be written either in capital letters or in small letters.
WARNING: incoming messages exceeding 64 characters will be ignored and will be not acknowledged.
SIM CARD AND PIN CODE
The system normally works with SIM cards without the PIN code. If the SIM card cannot work without the
PIN code it must programmed to the 1234 value: the board will use that code to use the SIM card.
USE OF THE INTERFACE WITH A TELEPHONE EXCHANGE SYSTEM
When the IT-2000 is connected to a telephone exchange, the number generated by the alarm system may
contain a prefix that must be skipped when forwarded to the GSM network (eg: the 0 065487954 number
must exit as 065487954).
This can be done through a suitable system setup (see the relevant paragraph).
NOTES
To avoid damages, when working on the PSTN line, IT-2000 doesn’t generate any ring signal at the
occurrence of an incoming call from the GSM network.
At system reset, all SMS messages are associated to the first telephone number (if any): to modify
this setting it is necessary to send a suitable command to the unit (smstel.x=0)
RESET (DEFAULT) BUTTON
To return to the initial default programming condition the system must be turned off (disconnecting supply
and battery) and then turned on with the RESET KEY (SW1) pressed.
The are two type of system reset:
1° PASSWORD RESET: if the key is pressed for about 5 seconds only the system password is reset
2° TOTAL RESET: if the reset key is pressed for more than 10 seconds the system will resume the default
configuration
REMARK: during reset the RED LED is turned ON, the GREEN LED blinks and, only for TOTAL RESET, the YELLOW LED
gives a short flash.
DIAL TONE
IT-2000 is able to generate either a continuous dial tone (default setting) or a pulsed dial tone.
To change the setting a suitable SMS command must be sent (PULSE=on/off).

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SMS TEXT COMMANDS
COMMAND DESCRIPTION EXAMPLE
PWD
Password declaration or assignment
The number of characters of the password
ranges from 0 to 6; if 0, the password is do-
sabled but an empty password declaration
command must be used to access the sy-
stem
pwd:000000 this command allows the user to
login the system
pwd=111111 this command sets a new password
TEL
Command to assign a value (max 32 cha-
racters) to one of the 8 telephone numbers
provided by the system. The command must
be followed by an index. The admitted cha-
racters are numbers and ‘+’
tel.1=[phone]
SMSTEXT
Command to assign a text value (max 40
characters) to one of the 4 SMSs supported
by the system (the 5th and the 6th cannot be
configured).
The command must be followed by an index.
smstext.1=periodic_life_test
This command will substitute the default value of
the life test SMS with the “periodic_life_test” text.
Warning: if the text contains space characters, it
must be included in a “ pair
SMSTEL
Command to link a SMS message to one or
more telephone numbers.
The command must be followed by an index
list.
smstel.1=12 smstel.3=4 smstel.4=0
SMS 1 will be sent to telephone numbers 1 and 2;
and SMS 3 will be sent to telephone number 4
and SMS 4 will not be sent to any number
LFOUT
Command to define the lifetest output signal
duration in second units
lfout=5
The lifetest output will be active for 5 seconds
LFTIME
Command to define the time duration of the
lifetest time in minute units: during lifetest
SMS dispatch, for the specified time, the sy-
stem will switch to the GSM network even if
the PSTN line is available.
lftime=10
Sets the lifetest time to 10 minutes.
LFDELAY
Command to set the lifetest interval in hour
units .
lfdelay=24
Lifetest (signal activation and SMS dispatch) will
be executed every 24 hours.
LFSTART
Command to set the delay, in hour units,
between the current SMS reception time and
the first execution of lifetest operations.
lfstart=8
The firtst lifetest procedure will start after 8 hours.
For example, with this command is possible, at
17:00, to program procedure to be executed at
01:00 time. Starting at 01:00 the lifetest will be
executed every LFDELAY value hours
GSMOFF
This command sets the GSM signal absence
time threshold (in minute units) to trigger the
GSM FAIL SMS forward operation.
gsmoff=5
If the GSM network is not available for more than
5 minutes, the system wiill send, as soon as pos-
sible, the GSM FAIL message.
GSM
(ON|OFF)
This command forces or not the usage of the
GSM network.
gsm=on the system will work only on the GSM
network line ignoring the PSTN line
gsm=off the system will use the PSTN line if
available, otherwise it will use the GSM
network
PFX
Command to add a prefix (max 6 characters)
to the telephone number of an GSM network
outgoing call .
pfx=+39
The prefix +39 will be added to the telephone num-
ber generated by the alarm unit.
For example, if the units generates 335349872
number, when forwarded to the GSM network the
[phone] number will be composed
SKIP
(ON|OFF)
This command enables or disables the tele-
phone extension option.
skip=on the first digit of the number generated
by the alarm unit will be skipped when
operating on the GSW network
skip=off no digit will be skipped
PULSE
(ON/OFF)
This command configures the output dial
tone (ON=pulsed OFF=continuous)
pulse=off the unit generates a continuous dial
tone

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Command Answer Notes
PWD:000000 PWD=123456 PWD:OK
PWD:OK
Assigns a new value to the pas-
sword
PWD:000000 TEL.1=[phone] PWD:OK
TEL.1:OK
Assigns the given value to the first
telephone number
PWD:000000 TEL.1? PWD:OK
TEL.1=[phone]
Returns the requested telephone
number
PWD:000000 TEL.2=33902537
lfdelay=24 lfstart=3 smstel.1=1
PWD:OK
TEL.2:OK
LFDELAY:OK
LFSTART:OK
SMSTEL.1:OK
PWD:000003 TEL.2=33902537
lfdelay=24 lfstart=3 smstel.1=2
PWD:*FAIL* Incorrect password
PWD:000000 TL.9=33902537
lfdelay=24 lfstart=3 smstel.1=2
PWD:OK
TL.9:*?*
LFDELAY:OK
LFSTART:OK
SMSTEL.1:OK
Command not recognized
PWD:000000 smstext.1=my_life_
test
PWD:OK
smstext.1:OK
PWD:000000 smstext.1=my life
test
PWD:OK
SMSTEXT.1:OK
life*?*
test*?*
Because of the presence spaces in
the text, only the “my” text will be
accepted; “life” and “test” words will
be intepreted as commands and will
be not recognized
PWD:000000 smstext.1=”my life
test”
PWD:OK
SMSTEXT.1:OK
Because of the “ markers, the space
characters have been accepted
PWD:000000 smstel.1=0
smstel.2=0 smstel.3=0
smstel.4=0 smstel.5=0
PWD:OK
SMSTEL.1:OK
SMSTEL.2:OK
SMSTEL.3:OK
SMSTEL.4:OK
SMSTEL.5:OK
Clear all association among address
book and SMS messages
EXAMPLES
PARAMETERS VALUES
Parameter Default value Min Value Max Value Units
PASSWORD 000000 From 0 to 6 characters
LFOUT 5 0 100 seconds
LFTIME 0 0 30 minutes
LFDELAY 0 (disabled) 0 240 hours
LFSTART 0 (immediate dispatch) 0 240 hours
GSMOFF 5 0 240 minutes
GSM OFF (PSTN line used) OFF/ON
PFX Empty (no prefix) 6 characters max
SKIP OFF (no digits are skipped) OFF/ON
PULSE OFF (continuous dial tone) OFF/ON

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TECHNICAL SPECIFICATIONS
Power supply 13.8 Vdc nominal (min: 9Vdc, max: 14.5Vdc)
Nominal current
110mA
Maximum current
600 mA (peak 1A)
Battery
12V 2Ah
Tamper ✔
Protection IP30
Fuse Type F, 5x20 mm 1A
Emulated line tone 440 Hz
Emulated line voltage 33Vdc
Housing Plate RAL 9002
Size 200 x 260 x 45 mm
Temperature range F rom +5°C to +40°C
Meets the requirements:
Conforme ai requisiti:
EN 50136-1-1
EN 50136-2-1+A1
ATS 2

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Installation must be carried out following the local installation norms by qualified personnel.
The factory refuses any responsibility when changes or unauthorized repairs are made to the product/sys-
tem. It is recommended to test the operation of the alarm product/system at least once a month. Despite
frequent testing and due to, but not limited to, any or all of the following: tampering, electrical or com-
munication disruption or improper use, it is possible for the product/system to fail to prevent burglary,
robbery, fire or otherwise. A properly installed and maintained alarm system can only reduce the risk that
this happens.
Any GSM speech dialler or communicator, not connected to the PSTN standard telephone line, does not
ensure proper communication in case of problems or limitations due to the GSM network.