# What is DLT registration for calling in India?

> DLT (Distributed Ledger Technology) registration is a TRAI requirement in India where businesses register their sender identity and message or call templates to reduce spam. Commercial calling and SMS in India are expected to run on DLT-compliant setups.

Source: https://agents.elevatebox.in/glossary/dlt-registration  
Updated: 2026-10-12

## Why it matters for AI calling

An AI caller for an Indian business should use DLT-aware numbers and follow TRAI rules on consent and timing. This is a trust and compliance feature, not an afterthought. Always confirm a provider's compliance stance before running campaigns.

## What gets registered

- The business itself, as an entity, on a telecom operator's DLT portal
- Sender IDs (headers) and pre-approved templates for SMS
- Consent purposes, so promotional messages reach only people who agreed
- The provider that sends on your behalf, linked to your registration

Promotional calls and messages are limited to 9 AM to 9 PM and must respect DND preferences; transactional and service messages are not time-restricted. The rules come from TRAI's [Telecom Commercial Communications Customer Preference Regulations, 2018](https://trai.gov.in).

## Frequently asked questions

### Is DLT the same as DND?

No. DND is the preference a customer sets to stop promotional calls or messages. DLT is the registration system businesses use to send commercial communication, and it checks those preferences and consent before delivery.

### Does an AI voice agent need DLT?

If it makes commercial calls in India, the setup behind it should be registered and follow TRAI rules on consent, timing and DND. Calling someone who enquired with you differs from a cold promotional call, so check your use with your provider. See [AI calling rules in India](https://agents.elevatebox.in/guides/ai-calling-rules-india-trai-dlt).