DLT Registration Guide for Bulk SMS & Voice Campaigns

05Aug

DLT Registration Guide for Bulk SMS & Voice Campaigns

Any business sending promotional or transactional SMS and voice OBD messages in India must be registered on the DLT (Distributed Ledger Technology) platform mandated by TRAI. Skip it, and even a perfectly written message gets silently dropped by the telecom operator before it ever reaches a customer.

The process starts with registering as a Principal Entity on your telecom operator's DLT portal, verified against your business PAN and GST documents. Next comes Header (Sender ID) registration - the short alphanumeric code recipients see as the sender - followed by Content Template registration, where every message format you plan to send is submitted with exact variable placeholders.

Precision matters here: even a mismatched space or punctuation mark between the registered template and the message actually delivered is enough to get it blocked. Getting templates right the first time avoids failed deliveries later, especially for time-sensitive sends like OTPs and order alerts.

A perfectly written SMS is worthless if its template was never registered on DLT - the network simply won't deliver it.

Businesses running voice OBD campaigns face the same scrutiny as SMS. Registering headers and templates upfront - before a campaign goes live - is what keeps delivery rates high when it matters most.