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					                       It MInI
                  GSM tELEpHonIC IntERfaCE
                                                                              tECHnICaL HanDbook
                                                                                   (EnGLISH)



DESCRIptIon
The IT MINI 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.
The system is completely transparent to SIA FSK and CONTACT ID protocols signals; it also provides a
signalling PSTN Fail relay output (NC/NO).
Using SMS commands IT MINI can be remotely configured and can generate system informations.




                                                                                                IT MINI
aUtoMatIC SMS MESSaGES
IT MINI 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)
messages:
 ID    Default text1             Description
 1      LIfE tESt                programmable life test: sent periodically according to the configu-
                                 ration
 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 SMS echo function: this function forwards each incoming not reco-
       text2                     gnized SMS (e.g.: SIM card expiry, credit exhaustion, etc.)
 6     GSM:ok LEV :3             After detecting a ring from the GSM network, the system checks if the
       pStn:faIL                 calling telephone number belongs to the address 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 3 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.
boaRD LaYoUt, tERMInaLS anD ConnECtIonS
LAYOUT



                                                        attention: introduce a SiM card with no data
                                                        stored in its memory (no telephone numbers in
                                                        address book and no text messages).
                                                        the SiM card insertion and extraction operations
                                                        must be done with the interface completely devoid
                                                        of power.




                                                             2                                 IT MINI
Terminals descripTion

 SuppLY        +-          13.8Vdc power supply
 GSM           In CoM      When terminal “In” is closed to terminal “CoM”, all outgoing calls are
 force                     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
 pStn FaiL                  Relay output active when the pStn line is not available
 KeY SW1                    parameters ReSet key




LED fUnCtIon

The following 3 LEDs provide systems status informations:

 YeLLoW      This LED gives the GSM link status: after startup this LED blinks to indicate that the system
             is trying to login the GSM network.
   GSM       Once logged the LED is turned OFF if the PSTN line is available and is turned to a steady
 STATUS      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      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:
    GSM            1 blink and 1 pause: signal absent or too weak (if this condition is stable it is
  SIGNAL             reccomended not to use this system)
  LEVEL            2 blinks and 1 pause: sufficient signal
                   3 blinks and 1 pause: good signal
   RED       This LED blinks when a system failure occurs (GSM out of order or network not available,
             SIM card locked). If the problem is related to GSM network the RED and the YELLOW LEDs
 SYSTEM      will blink simultaneously.
 STATUS

RESEt (DEfaULt) bUtton
To return to the initial default programming condition the system must be turned off (disconnecting supply)
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.



                                                       3                                                IT MINI
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.
In case of SIM card provided with PIN code, it’s possible to set in the SIM card the code 1234. This code is
used by the system for the release of the SIM card.
USE of tHE IntERfaCE WItH a tELEpHonE ExCHanGE SYStEM
When the IT MINI 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).

ex: the 0 065487954 becomes 065487954
DIaL tonE
 IT MINI 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).
notES
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)
 at system reset, all SMS messages are associated to the first telephone
 number (if any): to modify this setting an suitable command must be sent
 to the unit
pRoGRaMMInG anD ManaGEMEnt WItH SMS tExt MESSaGES
use of the sms text messages for remote programming
As already explained, IT MINI 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.




                                                       4                                              IT MINI
sms text commands
CoMManD                DESCRIptIon                                             ExaMpLE
            Password declaration or assignment            pwd:000000 this command allows the user to
            The number of characters of the password                     login the system
            ranges from 0 to 6; if 0, the password is do- pwd=111111 this command sets a new password
   pWD      sabled but an empty password declaration
            command must be used to access the sy-
            stem
            Command to assign a value (max 32 cha- tel.1=+39339258741
            racters) to one of the 8 telephone numbers
   tEL      provided by the system. The command must
            be followed by an index. The admitted cha-
            racters are numbers and ‘+’
            Command to assign a text value (max 40 smstext.1=periodic_life_test
            characters) to one of the 4 SMSs supported This command will substitute the default value of
 SMStExt    by the system (the 5th and the 6th cannot be the life test SMS with the “periodic_life_test” text.
            configured).                                  Warning: if the text contains space characters, it
            The command must be followed by an index. must be included in a “ pair
            Command to link a SMS message to one or smstel.1=12 smstel.3=4 smstel.4=0
            more telephone numbers.                       SMS 1 will be sent to telephone numbers 1 and 2;
 SMStEL     The command must be followed by an index and SMS 3 will be sent to telephone number 4
            list.                                         and SMS 4 will not be sent to any number
            Command to define the lifetest output signal lfout=5
  LfoUt     duration in second units                      The lifetest output will be active for 5 seconds
            Command to define the time duration of the       lftime=10
            lifetest time in minute units: during lifetest
  LftIME    SMS dispatch, for the specified time, the sy-    Sets the lifetest time to 10 minutes.
            stem will switch to the GSM network even if
            the PSTN line is available.
            Command to set the lifetest interval in hour    lfdelay=24
 LfDELaY    units .                                         Lifetest (signal activation and SMS dispatch) will
                                                            be executed every 24 hours.
            Command to set the delay, in hour units, lfstart=8
            between the current SMS reception time and The firtst lifetest procedure will start after 8 hours.
            the first execution of lifetest operations.     For example, with this command is possible, at
 LfStaRt                                                    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
            This command sets the GSM signal absence gsmoff=5
            time threshold (in minute units) to trigger the If the GSM network is not available for more than
 GSMoff     GSM FAIL SMS forward operation.                 5 minutes, the system wiill send, as soon as pos-
                                                            sible, the GSM FAIL message.
            This command forces or not the usage of the gsm=on the system will work only on the GSM
            GSM network.                                                network line ignoring the PSTN line
   GSM
                                                            gsm=off the system will use the PSTN line if
 (on|off)                                                              available, otherwise it will use the GSM
                                                                       network
            Command to add a prefix (max 6 characters) pfx=+39
            to the telephone number of an GSM network The prefix +39 will be added to the telephone num-
            outgoing call .                                 ber generated by the alarm unit.
   pfx                                                      For example, if the units generates 335349872
                                                            number, when forwarded to the GSM network the
                                                            +39335349872 number will be composed
            This command enables or disables the tele- skip=on the first digit of the number generated
   SkIp     phone extension option.                                     by the alarm unit will be skipped when
 (on|off)                                                               operating on the GSW network
                                                            skip=off no digit will be skipped
  pULSE     This command configures the output dial pulse=off the unit generates a continuous dial
 (on/off)   tone (ON=pulsed OFF=continuous)                 tone
                                                   5                                                 IT MINI
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
EXAMPLES
Command                               answer               notes

pWD:000000 pWD=123456                 pWD:ok               assigns a new value to the pas-
                                      pWD:ok               sword
pWD:000000 tEL.1=+39338790911         pWD:ok               assigns the given value to the first
                                      tEL.1:ok             telephone number
pWD:000000 tEL.1?                     pWD:ok               Returns the requested telephone
                                      tEL.1=+39338790911   number
pWD:000000 tEL.2=33902537             pWD:ok
lfdelay=24 lfstart=3 smstel.1=1       tEL.2:ok
                                      LfDELaY:ok
                                      LfStaRt:ok
                                      SMStEL.1:ok
pWD:000003 tEL.2=33902537             pWD:*faIL*           Incorrect password
lfdelay=24 lfstart=3 smstel.1=2
pWD:000000 tL.9=33902537          pWD:ok
lfdelay=24 lfstart=3 smstel.1=2   tL.9:*?*                 Command not recognized
                                  LfDELaY:ok
                                  LfStaRt:ok
                                  SMStEL.1:ok
pWD:000000     smstext.1=my_life_ pWD:ok
test                              smstext.1:ok

pWD:000000 smstext.1=my life          pWD:ok               because of the presence spaces in
test                                  SMStExt.1:ok         the text, only the “my” text will be
                                      life*?*              accepted; “life” and “test” words will
                                      test*?*              be intepreted as commands and will
                                                           be not recognized
pWD:000000 smstext.1=”my life         pWD:ok               because of the “ markers, the space
test”                                 SMStExt.1:ok         characters have been accepted
pWD:000000 smstel.1=0                 pWD:ok               Clear all association among address
smstel.2=0 smstel.3=0                 SMStEL.1:ok          book and SMS messages
smstel.4=0 smstel.5=0                 SMStEL.2:ok
                                      SMStEL.3:ok
                                      SMStEL.4:ok
                                      SMStEL.5:ok


                                               6                                         IT MINI
tECHnICaL SpECIfICatIonS
IMQ level                        TO BE DEFINED
Power supply                     13.8 Vdc nominal (min: 9Vdc, Max: 14.5Vdc)
Nominal current                  110 mA
Maximum current                  300 mA (peak 320 mA)
Emulated line tone               440 Hz
Emulated line voltage            12 Vdc
Size                             103 x 57 x 18,5 mm
Temperature range                From +5°C to +40°C

NOTES:




     Meets the requirements:
     en50131-1 Grade 2
     environmental Class 2



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.
                                                   7                                          IT MINI

				
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posted:9/15/2011
language:English
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