IP_SEC System-Alarm over IP System (AoIP) and Line supervision

The development trends of technical protection are increasingly becoming Internet-oriented.

IP_SEC (IP Security) (ip-ac.eu) system eliminates all alarm transmission flaws.
It performs three basic functions:

• Alarm signal transfer from the alarm control panel at the secured building to the monitoring center over the Internet,
• Constant control over the connection between the secured building and the monitoring center and
• Alternative alarm signal transfer over telephone lines and/or GSM (GPRS) networks.

The IP_SEC system consists of two components:

TheIP_AC interface (IP Alarm Communicator)is a communication deviceenabling alarm signal transfer from the alarmcontrol panel over the IPnetwork (ADSL, cable, wireless...) and at thesame time using thepossibility of transfer over standard telephonelines and GMS (GPRS)networks as backups.

A receiver unit called IP_REC (IPReceiver)is installed at the monitoring center enabling alarm signalreception,control over the connection to the secured building andcommunicationwith the operating software the monitoring center.

Transmitting alarm over Internet and backup networks

Oncethe alarm goes off at the secured building, the IP_AC interface seizesit, reads the CONTACT-IDinformation (additionally it can be adapted toany other alarmprotocol), reformats it into an IP package and sends thepackage overthe IP network to the monitoring center.

Thesignalsreceived by the Input/Output module (which is connetcted to theIP_ACmodule) can be handled at the same way as alarm signals.

Thereis an alarm receiver called IP_RECinstalled in the monitoring centerenabling alarm signal reception andcontrol over the connection to thesecured building over the Internet.

Data transfer takes aboutone second and does not exceed 70 bytes, asize which does not slow downthe Internet connection at the securedbuilding or ar the monitortingcenter.
The capacity of a ping coming from the receiver and beingsend back isa little over 30 bytes which also does not slow down theInternetconnection.

What happens when Internet connection is off?

IftheInternet connection at the secured building is disconnected, analarmgoes off at the monitoring center. The disconnection is alsodetected bythe IP_AC interfacewhich tries to transmit the event over the telephoneline or GSM (GPRS)network (secondary transfer can be prioritized -telephone line or GSMnetwork). If the secondary connections aredisconnected as well, analarm of general disconnection with the securedbuilding is sent to themonitoring software by the IP_REC receiver.

Whatisthe most important is that the monitoring center keeps CONSTANTCONTROLOVER THE OPERATION OF THE INTERNET LINE at the securedbuilding. Thereceiver and the interface constantly check theirconnection in presetadjustable intervals (pings).