The Department of Telecommunications (DoT) has issued a formal directive requiring all telecom service providers in India to implement the Calling Name Presentation (CNAP) service. Scheduled to take effect on November 1, 2026, this move is designed to bring greater transparency to voice communications by allowing recipients to see the name of the caller on their device screens before they answer. The mandate applies to all operators holding valid authorisations or licences for providing access services across their respective service areas.
Under the new guidelines, the system will function by automatically retrieving the caller's identity from the network database of the originating telecom provider. When a call is placed, the recipient’s device will display the caller’s number along with their name. If the recipient has already saved the number in their personal contacts, the name stored locally on their phone will appear. For unsaved domestic numbers, the system will pull the name registered in the caller’s subscriber records maintained by their respective telecom operator.
International calls will be treated with a distinct protocol to manage privacy and technical limitations. If an incoming international number is not stored in the recipient’s contact list, the screen will simply show the label 'International Call' rather than a specific name. This rule covers calls originating or terminating between India and other foreign nations, ensuring that the service provides clarity for domestic communication while acknowledging the constraints of cross-border network integration.
The rollout of CNAP will follow a phased technological approach. Initially, the service is mandated for 4G and higher-generation networks. The Department of Telecommunications indicated that the potential expansion of this functionality to include 2G, 3G, and landline networks will be evaluated separately at a later stage. Telecom operators are tasked with building, operating, and maintaining robust databases that accurately link user identities to their assigned identifiers to ensure that information is retrieved and delivered in real-time without degrading the overall quality of voice services.
While the feature aims to enhance caller recognition, the government has included specific provisions for privacy and business flexibility. Users who have previously opted for the calling line identification restriction (CLIR) facility in line with existing regulations will remain exempt, ensuring their names are not displayed during calls. Conversely, businesses and entities utilizing bulk connections are permitted to display a preferred name instead of their official subscriber data record. To utilize this, companies must prove their identity via a trademark registered with the relevant government registry or by providing a trade name registered on the Goods and Services Tax (GST) portal.
Security remains a cornerstone of the implementation. The DoT has mandated a 'security-by-design' approach, requiring that the query-response mechanism used to verify caller identity does not retain personal information once the incoming call is completed. Telecom operators are required to maintain strict data protection standards and ensure that their infrastructure can handle these identity queries without impacting network efficiency. Furthermore, operators must establish a formal grievance redressal mechanism to record and resolve user complaints regarding the service within a specified timeframe.
These instructions follow previous policy discussions, including recommendations from the Telecom Regulatory Authority of India (TRAI) issued on February 23, 2024. As the implementation deadline approaches, the government has noted that it may issue further clarifications or instructions as necessary to ensure a smooth transition. This initiative marks a significant shift in the Indian telecom landscape, aiming to curb the prevalence of anonymous spam or nuisance calls by standardizing caller identification across the country's diverse digital network infrastructure.
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