Cell Broadcast (CB) System : Recently, the Department of Telecommunications (DoT) in collaboration with the National Disaster Management Authority (NDMA),has started nationwide testing of a Cell Broadcast (CB) system aimed at delivering real-time disaster alerts to mobile users across India .
o It is being indigenously developed by the Centre for Development of Telematics (C-DOT).
o Unlike SMS, which is sent individually, CB messages are broadcast simultaneously, ensuring faster delivery—critical during emergencies.
o Purpose : The system aims to deliver real-time alerts for natural and industrial disasters such as earthquakes, tsunamis, lightning, and chemical leaks.
o While SACHET uses the Common Alerting Protocol (CAP) recommended by the International Telecommunication Union (ITU), the CB system offers instant, wide-area communication that is especially useful during network congestion.
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