The CENTRAL SECURITY LINK can be provided by a number of methods and your Installation Company will explain the best, most economical system to suit your security needs.

DIGITAL DIALLERS - Diallers incorporated in the alarm panel use the normal telephone service to transmit alarm signals to a special dialler receiving computer which receives and decodes the message. Hundreds of different messages can identify security alarms from all areas of the premises, system maintenance type alarms, and communications test reports. Each report sent represents a local telephone call cost to the client phone account.
By fitting a dialler to your local siren system, response is assured via the CENTRAL SECURITY LINK. Available wherever a PSTN phone service is available.

SECURITEL- This a dedicated security network provided by Telstra for use of by approved security companies for monitoring of alarms with a need for HIGH END SECURITY.
Securitel is enabled by Telstra overlayed on your existing telephone line, without interfering with normal use of the telephone in any way.
The presence of the alarm is continuously transmitted to CMS via duplicated transmission paths. Any cuts, line breaks or faults are monitored thus providing the added Security.
The alarm message is sent over the phone without making a call and therefore no additional telephone costs are incurred each time an alarm or system on/off message is sent.
Securitel is a registered Telstra product and is available in major cities and centres around Australia.

GSM - This is transmission of security over the GSM Network. GSM networks are "Global Systems for Mobile Communications" and are provided in Australia by all the major Telecommunications Companies. Suppliers of security alarm panels provide interfaces so that the panel can use the GSM network as a primary or secondary method of communication to the monitoring centre.
These digital networks provide many communication services and the security alarm transmission shares with other digital traffic. Used as a backup to a digital dialler it serves as a cost effective, improved security service. Care needs to be taken with the location of the "mobile phone" which sends the alarm to ensure local signal strength, network congestion, interference to signals with "dropouts" and normal commercial arrangements with mobile phone bills. Mobile phone plans established with the Telco will establish the call costs. The service is available on GSM coverage maps available from the Telco.