The alarm panel is programmed to call the dialler receiver numbers at CMS and is configured to provide total duplication with two separate 1345 numbers, connected to two separate answer point numbers on different pstn networks and technologies, with two dialler receivers. This makes the transmission path fully duplicated but it is still not constantly monitored.

CMS recommends that regular tests are sent by the panel at least once a week for domestic monitoring, and daily for commercial premises. CMS also recommends that each separate alarm point is transmitted when alarmed, but with only one telephone call per alarm point. This is called dialler lockout and ensures the Client does not receive excessive phone charges. All system management signals are also sent and monitored.

The use of a dialler as the transmission method is based on the risk assessment for the premises as contained in Australian Standard AS/NZS2201.1:2007 (Systems Installed in Clients Premises), and the specifications and limitations are contained in AS/NZS2201.5:2008 (Alarm Transmission Systems).

A higher security option may better suit the Premises Risk and consideration should be given to the CMS MultiPath IP option or the Emizon 21 network option, both with a known fixed operating cost.