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SECTION 2 - FUNCTIONS
2.1 Sending an Alarm
When an event has occurred and a reporting code signal has to be sent to the monitoring station (i.e. an
alarm), the signal can be transmitted via the GSM network as a backup, primary* or redundant*
communicator. Please refer to the "Programming the Control Panel" section in this manual.
Backup
The control panel will check the telephone line for dial tone. If no dial tone is detected, the control panel
switches its communications path through the GSM 1000.
Primary
The control panel will not try the telephone line, but will immediately send the signal through the GSM 1000.
Redundant
The control panel will send the signal through the telephone line. It will attempt the call via the telephone
line until successful, or until the programmed maximum dialing attempts has been reached. After the
attempt on the telephone line, the panel will always switch to the GSM 1000 to communicate the same signal.
* MAXSYS panels (PC40X0) can only use the GSM 1000 as a backup communicator.
2.2 Trouble Supervision
The GSM 1000 monitors itself for two possible trouble conditions: PGM Connection to the control panel, and
Loss of Cellular Communications. LED1 on the GSM 1000 module is used to identify which trouble condition
is present. When a trouble condition is present, the TBL output will switch low, which in turn can trigger a
zone input on the control panel. Please refer to the "Trouble Indication" section in this manual for specific
detail on the trouble conditions and operation of LED1.
2.3 Antenna Tamper
The antenna tamper switch module provides extra tamper security for the GSM 1000 antenna. Note that this
tamper switch is effective if the antenna is mounted right at the module (no extension cable) and if the
antenna bracket on the GSM 1000 module is used. The switch dimensions are such that they fit on the
module exactly if used with antenna mounting bracket. Therefore if the antenna is relocated to fit in another
hole, the tamper switch will generally be ineffective. Please refer to the diagram and mounting instruction
in the "Mounting the Antenna" section.
2.4 Downloading
If your GSM network has the required support, the GSM 1000 can be used for Downloading purposes to
a DSC control panel. This optional feature can be used if the GSM network supports modem communications
on its voice channel. Please refer to the RNG Terminal and Connection Diagram for proper connections.
Also, ensure Option 05 has been programmed accordingly, as indicted in "Programming the GSM 1000"
section in this manual.
Note: Downloading will only work if your GSM network supports SIA.
2.5 Emergency Calling
The GSM 1000 is capable of making an emergency call via the GSM network, for such cases as when the regular
telephone line is down. Simply by pressing the emergency button, the GSM 1000 will dial the preprogrammed
emergency telephone number. Please refer to the connection diagram in the "Panic Terminal" section and
telephone number programming in the "Programming the GSM 1000" section in this manual.
Note: It is recommended that the preprogrammed emergency number be that of a station with a 24-hr
attendant, such as your local monitoring station.
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