6
YELLOW
—
This LED will switch
ON ON
ON ON
ON when the interface switches to the GSM Network (due to land line
trouble). This LED can also blink quickly once (GPRS TX) or twice (GPRS RX).
GREEN (Top)
—
When this LED is
ONON
ONON
ON, the reception is optimal. This LED will switch ON only when
the other GREEN LED is ON.
GREEN
(Bottom) (Bottom)
(Bottom) (Bottom)
(Bottom) — If this LED is
OFFOFF
OFFOFF
OFF and the RED LED is ON, the GSM Network service is
unavailable
(NO SERVICE)(NO SERVICE)
(NO SERVICE)(NO SERVICE)
(NO SERVICE). This LED will
Blink Blink
Blink Blink
Blink when the GSM Network reception is bad. If this LED
is
ONON
ONON
ON, the
GS3055-IGS3055-I
GS3055-IGS3055-I
GS3055-I will be able to communicate to the GSM network.
OPERATING PRINCIPLES
Simulated Land Line Mode
The simulated land line provides the alarm control panel (with dialler interface) with a backup line in the
event of PSTN line trouble. If the voltage on the land line terminals (
TIP/RNGTIP/RNG
TIP/RNGTIP/RNG
TIP/RNG) drops below 4V for a
period of between 10 to 45 seconds (depending on the device connected to the
T1/R1T1/R1
T1/R1T1/R1
T1/R1
terminals), the
GS3055-I will switch the connected telephone device to the GSM Network for a full 15 minute interval,
at the end of this interval, it will check the land line:
•
if the land line has been restored if the land line has been restored
if the land line has been restored if the land line has been restored
if the land line has been restored, it will switch the connected device back to the land line;
•
if the land line is still downif the land line is still down
if the land line is still downif the land line is still down
if the land line is still down, it will continue to simulate the land line until it is restored. The GS3055-I
will not switch during ongoing calls
Sequence
• When alarm is triggered, the Alarm Panel goes off-hook.
• The GS3055-I will assert dial tone.
• Control Panel dials the number of the central station. Ensure the alarm panel inserts a minimum 1-
second pause, or has dial tone search enabled before dialing the number.
• The GS3055-I detects the DTMF dialing and stops dial tone.
NOTE: The GS3055-I is unable to decode pulse dialing.
• The GS3055-I will send the required Contact ID dual tone handshake to the panel.
• After receiving the handshake, panel transmits alarm message in Contact ID format.
• The GS3055-I decodes and transforms Contact ID digits into the IP packet and sends it to the Central
Station Receiver over the GPRS network.
• The receiver acknowledges the alarm and sends command to the GS3055-I to generate the
corresponding 1400Hz kiss-off signal for 800ms minimum.
• After the GS3055-I generates kiss-off, the panel goes on-hook if no more alarms need to be sent, or
it can send the next alarm.
Inputs
The GS3055-I has 4 inputs that can be used to trigger specific communicators. These events will
transmit using Contact ID format with Input 1-4 reporting as [991] to [994] respectively. The default
setting are as follows:
INPUT 1- FIRE
INPUT 2 - PANIC ALARM
INPUT 3 - BURGLARY
INPUT 4 - SYSTEM TROUBLE
These inputs are normally open and will activate when a short condition is detected between the terminal
and the COM.
NOTE: The Contact ID reports will be sent when the respective events occur.
NOTE: For UL installations, connections between alarm panel outputs and GS3055-I inputs shall
be run in mechanical protective conduits.
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