
Alarms Transmission System
Page 45
If the transmission network interface connection fails, the following transaction are
logged:
PSTN
– “PSTN Line Fault" (the keypad also changes status from green to red).
When the connection is restored, another transaction is logged: "PSTN Line
Restored".
GSM
– “GSM Line Fault" (the keypad also changes status from green to red).
When the connection is restored, another transaction is logged: "GSM Line
Restored".
2.
The Alarm Transmission System (ATS) is monitored by making a test call to check
the complete system. (The test call must be configured as either dynamic or static.)
The following is the sequence of logged events for a successful test call:
"Alarm Test Call" (this logged event triggers the test call)
"Test call success"
For an unsuccessful test call:
"Alarm Test Call"
"Test Call Fail"
Internet transmissions
Mode of operation
Alarms from the AS are transmitted, via the SPT, in a store-and-forward mode of
operation.
For a SIA IP Direct connection:
The SPT forwards the transmission directly to the SecureConnect servers.
The SecureConnect servers store the transmission.
The SecureConnect servers forward the stored transmission directly to the alarm
receiving centre via its Receiving Centre Transceiver (RCT).
For a CSL DualCom connection:
The SPT forwards the transmission directly to the SecureConnect servers.
The SecureConnect servers store the transmission.
The SecureConnect servers forward the transmission to the CSL DualCom Gemini
Network, and CSL Dual Com passes the transmission onto the alarm receiving centre
via its Receiving Centre Transceiver (RCT).
The SPT maintains a continuous connection to the SecureConnect servers and attempts
to send unsuccessful alarm transmissions as follows:
SPT to SecureConnect Servers
– If an alarm transmission is unsuccessful from the
SPT to the SecureConnect servers and the retry sequence has expired, the following
event is logged at the SPT:
“Cloud Push Fail". If the connection to the SecureConnect
servers is not available at the time the transmission is due to be transmitted, the
transmission is held at the SPT until a connection to the SecureConnect servers can
be re-established. Acknowledgments of successful alarm transmissions received
from the SecureConnect servers are forwarded to the AS via the SPT.