The GPRS-T1 converter is a device dedicated for use in intruder alarm systems for the
purpose of reporting and messaging via the GSM networks. The event codes received in
the telephone format can be converted to the form transmittable with the use of GPRS
technology or to the SMS message format. Using the GPRS technology makes it possible
to send the codes to the STAM-2 monitoring station or SMET-256 converter. The codes in
SMS format can be sent to any monitoring station which supports the SMS reporting
feature. Apart from the event code conversion function, the device offers the capability of
using SMS messages or CLIP service for notification about occurrence of selected events.
In order to execute some functions, the converter makes use of the features offered by
the CLIP service, which enables identification of the calling party and presentation of its
telephone number. Thus, test transmissions can be generated and sent without incurring any
costs whatsoever.
Fig. 1. Basic applications of the converter.
1. C
ONVERTER FEATURES
•
Simulation of telephone monitoring station.
•
Receiving reporting codes sent in DTMF telephone format (Ademco Express or Contact ID)
or in SIA format.
•
Conversion and retransmission of event codes to two monitoring stations.
•
Acknowledgment of event receipt:
– after sending SMS message (code conversion to SMS format);
– after acknowledgment of event receipt by the monitoring station (code conversion to
GPRS transmittable form);
– immediately on receiving the event (SMS messaging and CLIP service).
•
Capability to automatically replace the GPRS transmission with SMS message, if there are
problems with GPRS transmission.
