¢Reliability
¢Data Security
¢Utilization of current infrastructure (SCADA, PI, OPC, LAN/WAN, WiFi, GSM SMS gateways, CCTV, etc.)
¢Minimum added-cost
¢Customization and flexibility
¢Future technology (3G, VoIP, Video-over-IP, etc.)
¢Two-way versus one-way communication
¢In-house versus out-sourced development
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