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Alarm is the original group of regional area networks that are owned and operated by AlarmNet, Inc. AlarmNet networks operate in most major metropolitan areas and cover about 65% of the urban population in the U.S. Each area functions independently and is supported by the NCC (AlarmNet Network Control Center). A network is comprised of up to 30 or more radio towers depending upon the size and the topography of the coverage area. These towers consist of network nodes and routers that are responsible for transporting alarm signals and network control information. Each network operates on exclusive frequencies in the 900 MHz band. The network is designed with overlapping coverage so that subscriber radios are typically in communication with two or more network towers. The networks are monitored around the clock and the system availability exceeds 99.5%.

There are typically two types of AlarmNet radios: One-Way radios check in at regular intervals and Two-Way radios are polled by the network. Reliability is assured by repeating alarm transmission 60 times. The network identifies the radio and the Central Station to which it belongs. The alarm is then relayed to the Monitoring Partners receiver directly, if it is within the same network or through the NCC, if outside that network. The entire process is fully automated and typically takes a few seconds.

In addition to delivering messages from subscriber’s premises, the subscriber radios are also supervised so if a subscriber loses communication with the network, the monitoring station is notified. The supervision window ranges from 5 minutes, 6 hours, 24 hours, and 48 hours depending on the service selected. In addition all message paths are verified by the network to ensure that all alarm communications are successfully delivered to the central station receiver.

Choose Your Coverage
AlarmNet-A ensures that if telephone service in an alarmed business or home is interrupted for any reason, an AlarmNet transmitter would send an alarm and supervisory signal across a sophisticated, supervised radio network to the Monitoring Partners Central Station.
As the original AlarmNet grew in popularity, so did the need for greater geographic coverage for dealers and end users. AlarmNet ­M links an easily installed transmitter in the business or home into the Mobitex Data Network. The signal is then transmitted through the shortest available path with increased speed and reliability.
provides coverage without boundaries for you and your subscribers. AlarmNet-C transmits supervised alarm signals over powerful cellular control channels nationwide. Unlike cellular voice channels, no phone calls are actually made so there are no busy signals or phone bills to worry about.

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