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GSM/GPRS Alarm Communicators
Alarm indications which may occur on one or more of the 3 programmable input lines. Bear in mind that 2 voice
messages can be recorded for each of the 3 input lines on the device, one for Activation and one for Resetting.
PSTN line test. 2 voice messages may be recorded: one for PSTN line absence and one for Resetting.
Power supply voltage test. 2 voice messages may be programmed: one indicating Power supply voltage problems and
one for Resetting.
Periodic voice message, with a programmable time period between 1 hour and 1 year.
A voice call takes place when an event occurs on a channel for which a voice message and at least one telephone number
has been programmed.
In this case, the Communicator performs the following steps:
1.
The Communicator selects a telephone number and forwards the call over the GSM telephone line.
2.
The Communicator makes sure that the number is not busy and that there are no problems on the GSM network, so that
it can proceed with the next step, otherwise the call will end and step 1 will be attempted again, up to a maximum of 8 times
(depending on the programmed value). After 8 attempts the call cycle will be considered complete. If the alarm channel
has been programmed to call several telephone numbers, they will be called in a set sequence. By doing this, for
example, the possibility of calling a busy number several times in the space of a few seconds can be avoided.
3.
The Communicator waits for a response from the number called for a period of up to 60 seconds. If the outcome is positive,
the Communicator moves on to step 4; otherwise the call will end and step 1 will be attempted again, up to a maximum
of 8 times (depending on the programmed value). After 8 attempts the call cycle will be considered complete.
4.
The Communicator reproduces the message corresponding to the channel experiencing alarm status; the call is only
considered complete once the
button (if programmed) on the telephone receiving the message has been pressed. In
any case, the call is considered successful after the message has been repeated up to a maximum of 8 times (depending
on the programmed value). If, at the selection stage, several events occurred causing several different messages to be
sent to the same telephone number, these messages are reproduced (each for a maximum of 8 times, depending on the
programmed value) in sequence during the same telephone communication, thus avoiding calls being made to the same
number several times. If at the end of the call cycle, the line which caused the Communicator to be activated is still in alarm
mode, the procedure described above will not be repeated again. In fact, the line that caused a call cycle must return to
standby mode before a new cycle is activated.
Priority management (BGSM-120 series only)
The Communicator can be used to transmit alarm events and SMS or voice messages; several priorities may be
programmed using the BGSM-120 Console software (please refer to the section corresponding to programming procedures
using the BGSM-120 Console software). The table below lists the default priority management settings.
Simulated telephone line priority
When the device connected to the LI terminals requests the line, any other call made at that moment in Voice dialer mode will
be terminated. The calls requested by the device connected to the
LI
terminals (a burglar alarm control unit, for example) take
place in this manner. When the device connected to the
LI
terminals frees the line, the voice dialer will resume the suspended
calls and begin sending voice messages again.
SMS dialer priority
If a piece of equipment connected to the LI terminals is making a call over the GSM network through this dialer and an SMS
dialer action needs to be performed, the call from the interface will not be terminated and the SMS message will still be sent.
Dialer event priority
Neither of the two dialer modes (Telephone and SMS) is prioritised; this means any messages will be sent in chronological order.
Priority management table
Event
priority
Event description
Default settings
Can be
programmed
using software
1 (HIGH)
Request LI line (release)
;
Yes
2
Voice dialer (voice messages)
Yes
*3 (LOW)
GPRS supervision
No
* The GPRS supervision event has the lowest priority and cannot be programmed using software
