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What
is Skyroute ™
? SG Wireless Communications is pleased to provide to the security industry a new method of communication for the transmission of event conditions. Unlike traditional methods of communication that rely on a direct connection, such as regular phone lines, Skyroute takes advantage of a breakthrough technology called Cellemetry Data Service. Cellemetry enables alarm equipment to be remotely monitored in a secure, cost-effective manner by using the existing cellular network control channels. Skyroute therefore offers improved security, does not utilize phone lines and is not subject to sabotage or accidental phone outages when lines are down. Combined with landline communication, Skyroute provides dual path communication to the central station to ensure that "the alarm always gets through" in case of emergency. Cellemetry is a breakthrough technology that transmits short messages via the control channels of the cellular network. The analog cellular network (AMPS) is divided into 790 voice channels and 42 control channels. The control channels are used to initiate cellular telephone calls. Once the call is initiated, the cellular system directs the telephone call to a voice channel. The control channels are more robust than the voice channels for several reasons. First, the control channels are digital, unlike the voice channels which are analog. This can be compared to the superior quality of compact disc versus vinyl records. The control channels also operate at higher transmission power than the voice channels, giving better coverage. Finally, the cost of using the control channels is far less than the regular voice channels. By using the cellular network, Cellemetry takes advantage of a proven technology used by millions of cellular users and available virtually everywhere. By far, the analog cellular network is the biggest radio network in the world and there are already 200,000,000 packets of data transmitted over the control channels every day in North America. This represents an average of only 10% of the maximum control channel capacity. The Cellemetry Service operates in the same manner in which roaming telephones operate in the cellular system. A roaming telephone is defined as a cellular telephone operating in any system other than its home system. When a cellular telephone is turned on outside of its home system it sends its Mobile Identification Number (MIN) and its Electronic Serial Number (ESN) to the cellular system via one of the control channels. Based on the cellular phone number, the local cellular switch is able to communicate with the "Home System" of the roaming telephone. It uses the SS7 network which interconnects all cellular switches in North America to confirm the user is allowed to use the system and the phone calling features that are available to that customer. The Cellemetry radio, like a roaming cellular telephone, sends an ESN and MIN number over the SS7 network, but the MINs are specifically assigned so the MIN and ESN are routed to a Cellemetry Service Gateway that is also connected to the SS7 cellular network. The MIN serves to identify the Cellemetry radio and the ESN is the data field that contains the Skyroute alarm message. How the signal travels to the Central StationWhen an alarm is triggered at the monitored site, a signal is sent via Skyroute to the cellular network and then, via the NA intra-cellular network to the "Cellemetry Gateway" from there, the signal is sent to Connect 24 Data Communications. The Clearing House then forwards the alarm to the appropriate central station for dispatch. Once the alarm has been successfully received at the central station, Connect 24 returns a confirmation to the Skyroute unit via the cellular network. Please note that one alarm signal is sent per transmission. Multiple alarms will generate multiple transmissions over the cellular network.
Who is Connect 24 Data Communications? Connect 24, a member of the DSC Group of Companies, is the service provider created specifically to offer the Skyroute service to the security industry. Founded in 1997, Connect 24 has put in place a secure facility that meets the highest standards of UL ratings for the routing of critical condition signals. Connect 24 also offers a reliable and fully automated system for the activation of Skyroute Transceivers. This service is available 24 hours a day, 365 days a year for the activation of your Skyroute Cellemetry Transmitter. As a routing center, Connect 24 receives signals from the cellular network and re-routes them to the central station. Upon receiving a confirmation of reception from the central station, it returns a signal back to the Skyroute transceiver over the cellular network. In doing so, the Skyroute transceiver receives a confirmation of delivery of an alarm condition or an opening/closing to the Central Station, eliminating the chance of signal loss.
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