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Guides on WhatsApp Business API, AI voice calls, SMS and omnichannel messaging for Indian businesses.

DLT registration guide for SMS senders in India – xreach51
Compliance

DLT Registration for SMS and Voice: Step by Step

DLT registration has four layers — entity, header, template and consent — and from 17 November 2026 a fifth for voice: declaring your A2P calling line identities. The process, verified against TRAI’s regulations on 1 October 2026.

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