The Government of India has launched an indigenous Cell Broadcast System (CBS) to strengthen emergency communication and enhance public safety during disasters.
What is Cell Broadcast System (CBS)?
Cell Broadcast System is a technology that enables authorities to send instant, geo-targeted alert messages to mobile users during emergencies.
Sends messages to multiple users simultaneously
Does not depend on SMS network congestion
Works even during high network traffic situations
Can deliver alerts within seconds across large populations
Key Features of the System:
Indigenous Technology: Developed by the Centre for Development of Telematics (C-DOT) under the Department of Telecommunications
Institutional Collaboration: Implemented with support from
National Disaster Management Authority (NDMA)
Ministry of Home Affairs
Geo-targeting: Alerts can be sent to specific affected areas
Multi-language Support: Messages in English, Hindi, and regional languages
Automatic Delivery: No subscription required by users
How the System Works
Uses mobile network cells to broadcast messages to all devices in a defined area
Alerts appear with a distinct sound and vibration, even on silent mode
Can be used for natural disasters (cyclones, floods, earthquakes) and man-made emergencies
Based on Common Alerting Protocol (CAP) for standardized warning dissemination
Significance of CBS:
Enhances disaster preparedness and response time
Ensures last-mile connectivity for warnings
Reduces loss of life and property
Strengthens India’s digital public infrastructure for disaster management
Supports real-time communication in crisis situations
Recent Developments / Testing:
Nationwide testing conducted with “Extremely Severe Alert” messages sent to mobile users
Test messages clarified that no action was required, indicating system validation phase
Aimed at assessing reach, efficiency, and reliability of the system
UPSC - 2027 - Prelims cum Mains - Foundation Course / Batch Starts on 14-05-2026 
