Network based systems

Making waves: How the new communication network is about to give the Delhi cops the edge | Delhi News

New Delhi: while phasing out its Tetranet Wireless NetworkDelhi Police is acquiring an advanced digital trunked radio system that will meet the needs of its network for the next 10 years.
Estimated to cost Rs 100 crore, Police Commissioner Rakesh Asthana has grown to be keen on incorporating ‘Make in India’ components to have a reliable and secure network system for police communications.
The new wireless radios, which would operate on the 800 MHz frequency band, would be purchased in batches over five years. Approximately 12,950 radios are expected to be purchased over the next year and 7,000 in the next batch. Police plan to procure 5,000, 2,500 and 2,500 radios in the coming years, documents reviewed by TOI suggest.
Wireless radio setups are not only necessary for internal communication, but they are also an essential part of police action in the form of wireless conversation logs recorded when cops rush or have reached a crime scene.
Existing Tetranet sets have several network-related shortcomings. Sources said that the maintenance contract expired years ago, after which efforts were made to purchase an updated and reliable communication system in which Indian-made components were used.
While police previously struggled with network coverage issues, the new system would now offer better communication, a source said.
This time, the Delhi Police intends to install an “open standard digital trunked radio system” with wide area and multi-site operations for pan-Delhi coverage. The purchase would have been made earlier, but the high authorities insisted on having a Made in India configuration. This caused some delay. The purchase should be finalized soon. The first decisions could be made around mid-August, as many companies are now using components made in India.
The new system would be equipped with an IP-based digital voice recording system, which would provide audio recordings of all channels while being able to reconstruct the entire scenario of a radio communication and the data between the dispatcher without wire and the PCR van related to any criminal incident. The recording system would be integrated into ERSS-112 (the police control room).
It would support at least 250 chat groups with members with the same functions or role to communicate with each other. There would be a provision to assign no less than 15,000 unique individual radio identifiers with the possibility of expanding this to 30,000 in the future.
“There will be at least four priority levels, including emergency and operational features, for rapid call handling. Each time a subscriber radio leaves the coverage area, an alert will sound. The dispatch console will also alerted,” an officer said.

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