Difference between revisions of "Line monitoring"
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== ASLT subscriber lines == | == ASLT subscriber lines == | ||
Revision as of 11:17, 17 August 2007
In security systems....
Contents
ASLT subscriber lines
Wire test
Tone test
ATLB subscriber lines
Supervision of IP stations
The IP substation is supervised in two different ways.
- Each IP-sub-stations have its own unique TCP socket for data communication. This socket send TCP-alive frames every 5 second, thus a broken socket is discovered within 10 seconds and reported as line error from AlphaCom.
- From the Application layer AlphaCom is sending a "PING" approximately every 90 second. The stations reply with a "PONG". If one PONG is missing the station is reported as line fault.
IP station down is now reported to the event handler "faulty station line" ON/OFF and reported on the log port in the two following ways:
930: Feb 13 16:17:58 src@Node1 AlphaLog: N001.D065:.Exch:@D65.B25-1 Line Down: IP ST Data Com St 20 "1001 -"
(Data communication is lost, no PING reply or socket closed)
933: Feb 13 16:21:34 src@Node1 AlphaLog: N001.D065:.Exch:@D65.B25-1 Line Down: IP ST License St 20 "1001 -"
(This happens if you enter a new license key with no IP stations licenses or not enough licenses, then some stations will be out of business)
The system station will report like ordinary line faults with reference to master board and first port since the IP station is not related to any physical AMC board position: