At present, there are many communication methods in China, of which the more mature ones and the more widely used ones are telephone dialing methods. The telephone dialing host has a simple networking, the user is easy to install, the system is stable and reliable, and the alert can be easily sent to the networking center and the user's phone or mobile phone for remote control. However, the disadvantages of telephone dialing alarms are also obvious: dialing will frequently generate telephone charges; uploading information will be slightly delayed; in addition, many reasons of the telephone system will lead to user's communication to the center, such as user arrears downtime, telephone station failure , even those with ulterior motives intentionally destroyed. If the front-end inquiries, alarm verification, and understanding of the telephone line conditions are to be completely realized, it is still a problem for the network center. This is largely due to the problem of borrowing third-party communication media.
Among them, the communication line is easily damaged and the alarm center cannot immediately find out, which is the biggest drawback of the wired telephone network. Some similar cases that occurred in Hebei, Shanghai, and Jiangsu were implemented by criminals against this weakness in the telephone line alarm network. As the criminals first broke the user's telephone communication line, the report of the user's alarm host could not send the alarm through the wired telephone line, and the alarm center could not know the user's alarm information. Criminal activities have not been stopped in a timely manner, resulting in serious consequences. These incidents raised the problem of imperfect police methods to the owners’ huge economic losses. It can be seen that with the emergence of new types of criminal means and technical means crimes, the current networked alarm methods are in urgent need of technical transformation and upgrading.
In response to the above problems, the networked alarm host launched by Legris Electronics has done a patrol function on the telephone line network alarm host. The terminal equipment handshaking with the platform at regular intervals to report that they are still in the work position. If the time platform does not receive the information of the front-end device, the platform will immediately report an alarm, indicating that the front-end host may have failed. By checking the police information and promptly informing the user for repair, the thief can effectively prevent the theft of the alarm host from theft.
Another solution is to use dual-network alarms to increase Legris’s RP300GSM module to achieve dual-channel alarms for phone lines and mobile phones. In normal conditions, the device will alarm over the phone line to the platform, once the phone line has been intentionally destroyed or When the telecommunication office end fails, the GSM module will automatically convert the mobile phone card and the center to report the alarm. At the same time, the GSM module outputs the signal to the center to inform the phone line or mobile phone card is lost. When the telephone line returns to normal, GSM will automatically switch to the platform through the telephone line alarm (the system default is the telephone priority), in short, one of the channels is destroyed, the host will automatically switch to another channel to alarm.
Among them, the communication line is easily damaged and the alarm center cannot immediately find out, which is the biggest drawback of the wired telephone network. Some similar cases that occurred in Hebei, Shanghai, and Jiangsu were implemented by criminals against this weakness in the telephone line alarm network. As the criminals first broke the user's telephone communication line, the report of the user's alarm host could not send the alarm through the wired telephone line, and the alarm center could not know the user's alarm information. Criminal activities have not been stopped in a timely manner, resulting in serious consequences. These incidents raised the problem of imperfect police methods to the owners’ huge economic losses. It can be seen that with the emergence of new types of criminal means and technical means crimes, the current networked alarm methods are in urgent need of technical transformation and upgrading.
In response to the above problems, the networked alarm host launched by Legris Electronics has done a patrol function on the telephone line network alarm host. The terminal equipment handshaking with the platform at regular intervals to report that they are still in the work position. If the time platform does not receive the information of the front-end device, the platform will immediately report an alarm, indicating that the front-end host may have failed. By checking the police information and promptly informing the user for repair, the thief can effectively prevent the theft of the alarm host from theft.
Another solution is to use dual-network alarms to increase Legris’s RP300GSM module to achieve dual-channel alarms for phone lines and mobile phones. In normal conditions, the device will alarm over the phone line to the platform, once the phone line has been intentionally destroyed or When the telecommunication office end fails, the GSM module will automatically convert the mobile phone card and the center to report the alarm. At the same time, the GSM module outputs the signal to the center to inform the phone line or mobile phone card is lost. When the telephone line returns to normal, GSM will automatically switch to the platform through the telephone line alarm (the system default is the telephone priority), in short, one of the channels is destroyed, the host will automatically switch to another channel to alarm.
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