T. E. L. L. SOFTWARE
HUNGÁRIA KFT
4
2
System operation
The
IP Bridge
transmits the signals of the alarm system connected to its simulated phone output and signals
generated on its inputs towards a TEX-MVP remote monitoring server, TELLMon or SIA DC-09 receivers via
wired internet. The route of the signals is illustrated in the following overview of the system. (Figure 1.)
Figure
1
. Route of the signals
•
Connection with servers/receivers
The module keeps alive the connection with the servers/receivers by sending periodic signals to their IP
addresses. If the connection with any of the IP addresses is lost the device attempts to reconnect at least once
per minute.
•
Event sending/Acknowledgement
Events are sent to all preset IP addresses at the same time. The module acknowledges the event towards the
monitoring station if it receives at least one ACK from any of the preset IP addresses. The same rule is applied
to the module’s internal events. Regardless the acknowledgement it continues to report the event to the rest of
the IP addresses. If it doesn’t receive an ACK from an IP address it attempts to report the event
in every 10
seconds via LAN or in every 20 seconds via mobile internet for up to 10 minutes
. If the event couldn’t be
reported for 10 minutes for all the preset IP addresses, the module stops trying. This event won’t be reported
again, but it will be in the module’s event log. If a
ny of the inputs is activated when a power failure occurs, an
event will be generated again when the power comes back.
