Alarm Interface Module Dynamic Network Routing
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Solution Overview
Problem
Existing alarm systems face high costs due to the expensive use of wireless networks for communication, particularly in scenarios where the public switched telephone network (PSTN) is unavailable.
Innovation Solution
The system routes outgoing calls from an alarm condition to one of several available communication networks by initiating a call to a defined number and selecting the network based on called number information, using a network interface module that includes a line interface, multiple communication network interfaces, and a processor to select the appropriate network for the call.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless networks are used for alarm communication, then reliability is improved (backup when PSTN fails), but cost increases
Solution Approach 1:
The system dynamically selects communication networks based on real-time conditions. The interface module monitors network availability and automatically switches between PSTN and wireless networks, making the communication path adaptive rather than static. This resolves the contradiction by using wireless networks only when necessary (when PSTN is unavailable), maintaining reliability while minimizing cost.
Solution Approach 2:
The system changes the parameter of network selection based on called number information. By analyzing the destination number, the interface module determines whether to route through PSTN or wireless networks, optimizing the balance between reliability and cost based on specific communication requirements.
2Adaptability or versatility
If multiple network interfaces are provided, then adaptability is improved (can switch between networks), but device complexity increases
Solution Approach 1:
The interface module is designed with multi-functionality, serving as a universal gateway that can handle multiple network types (PSTN and wireless networks). This single module performs the function of multiple dedicated interfaces by dynamically selecting the appropriate network based on called number information, reducing overall system complexity while maintaining adaptability.
Solution Approach 2:
The interface module acts as an intermediary between the alarm system and multiple communication networks. It mediates the connection by receiving alarm signals and automatically routing them through the most appropriate network based on destination analysis, simplifying the interaction between the alarm system and diverse network infrastructures.
3Productivity
If automated network selection is implemented, then productivity is improved (faster alarm notification), but device complexity increases
Solution Approach 1:
The system performs preliminary analysis of called number information before actual alarm notification. By pre-evaluating the destination number and determining the optimal network route in advance, the system prepares the communication path proactively, enabling faster alarm notification when the alarm actually occurs without adding complex real-time decision-making mechanisms.
Data Source
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AI summary
In an alarm system, outgoing calls representing a sensed alarm condition are routed to one of several communications networks. The calls are routed by first initiating a telephone call to a defined number, in response to sensing the alarm condition, and then selecting one of a plurality of available networks based on called number information. A communicatin over the chosen network is placed to signal the alarm condition. Routing may be performed at an interface module in communication with a conventional alarm panel.