In most markets, breaking the telemarketing rules gets you a fine. In India it gets your phone lines switched off.
That difference is the whole story, and it is why teams who arrive in India with a calling playbook built for the United States or Europe tend to have a bad first quarter. The Indian regime does not primarily punish you through the courts. It punishes you through the telecom operator, by taking away the connectivity your business runs on, and it does so on a published schedule.
Here is how the framework works as of August 2026, with the regulation text attached so you can verify each point.
15days
Outgoing services barred across every operator on a first established violation.
1yr
Full disconnection and blacklisting on the second, whether or not those lines were used.
7days
The window a recipient now has to complain about a commercial call or message.
The rulebook, and which version is current
India regulates commercial calling through the Telecom Commercial Communications Customer Preference Regulations, issued by the Telecom Regulatory Authority of India in July 2018, amended that December, and amended substantially by the Second Amendment of 12 February 2025.
A Third Amendment was published in draft in March 2026 and went through consultation in April and May. As of August 2026 it has not been notified in the Gazette, so it is not yet law. It is worth tracking, partly because TRAI's stated motivation includes the AI based detection of unsolicited communication that the major operators have started deploying. The detection is getting better, which matters more than any single rule change.
You register, or you do not call
Everything in India runs through registration on a distributed ledger platform operated by the access providers. You register as a Sender, you register your headers, and you register content templates. Voice campaigns run against registered identities, not anonymous trunks.
The regulation is blunt about the alternative. A sender not registered with any access provider must not make commercial communication, and if it does, "all the telecom resources of such Sender may be put under suspension or may also be disconnected". Unregistered commercial communication is classified as unsolicited by definition, regardless of how welcome the recipient found it.
Registration also got heavier in 2025. Senders and telemarketers go through physical verification, biometric authentication, and linking to a unique mobile number, and access providers must hold a binding agreement setting out what happens when things go wrong.
The rule written for you specifically
Most compliance content about India stops at registration and do not call lists. For anyone deploying voice AI, the more important line is the one the Second Amendment substituted into Regulation 4:
Every Sender shall notify the Originating Access Provider, in advance, about the use of Auto Dialer or Robo-Calls as well as the intended objective of such calls in writing.
TCCCPR Second Amendment, 12 February 2025
An AI voice agent placing outbound calls is an auto dialer running a robo-call by any reading TRAI would recognise. So there is a filing obligation before you launch: tell your originating operator, in writing, in advance, that you are doing this and what the calls are for.
TRAI's explanatory memorandum sets out the reasoning, and it also explains the numbering split. Promotional voice calls placed through an auto dialer are to run on 140 series numbers. Service and transactional calls placed the same way run on the 1600 series that the Department of Telecommunications allotted for the purpose. Calls from a 1600 number are expected to carry more trust with the person answering, which is exactly why the obligations attached to them are strict.
The category you are in decides everything else
India sorts commercial communication into three buckets, and the definitions are narrower than teams expect. Getting the classification wrong is the most common own goal, because the penalty for a misclassified call is not a warning, it is being treated as unsolicited.
| Category | What it covers | Consent |
|---|---|---|
| Transactional | A response to something the customer has done, within thirty minutes of that transaction. One time passwords, payment confirmations, refund information. | None required |
| Service | Information about a product they already hold: delivery updates, safety notices, balance alerts, warranty and recall. | None for existing customers; explicit consent for the transaction facilitation case, valid seven days |
| Promotional | Anything advertising a product or service, including a service call with promotional content mixed in. | Preference register or explicit consent |
Two details in that table do most of the damage in practice. The thirty minute window on transactional calls is a hard boundary, so a follow up an hour after a form fill is not transactional no matter how it is framed. And mixing any promotional content into a service or transactional call converts the entire call into a promotional one, which then requires promotional consent it does not have.
For a sales oriented voice agent that is the design constraint. An agent that confirms a booking and then offers an upgrade has changed category mid sentence.
What enforcement looks like
A recipient has seven days from the communication to complain, extended from three by the Second Amendment. Where the complaint threshold is met, the originating access provider issues a notice, gives the sender a chance to represent its case, and investigates within five business days.
If the finding goes against the sender, the schedule in the regulation is mechanical. First established violation: outgoing services on all telecom resources allotted to that sender, including PRI and SIP trunks and SIMs, barred by every access provider for fifteen days, "irrespective of whether those telecom resources were actually used or not in making such communications". Second and subsequent: full disconnection for one year, blacklisting so no operator will issue new resources during that period, and the devices used blocked for a year. One number may be retained with outgoing barred, and emergency services stay reachable.
Read that clause about unused resources again, because it is the part that surprises people. The remedy attaches to the sender, not to the specific line that misbehaved. A contained experiment on one trunk can take down the trunks your support desk runs on.
There are monetary penalties in the framework too, but most of the schedule of financial disincentives falls on the access providers for their own failures. For a business, the operative risk is loss of connectivity and blacklisting, not a bill.
What this means for how you build
01
Register first
Sender, headers, and content templates on the DLT platform before any dialing, not in parallel with it.
02
File the notice
Written intimation to your originating operator that you use an auto dialer, stating the objective.
03
Pick the series
140 for promotional auto dialed calls, 1600 for service and transactional. Never blur them.
04
Guard the category
Keep promotional content out of service calls at the prompt level, and monitor for drift.
That last step is where an AI agent differs from a recorded message. A script cannot improvise its way into a different regulatory category. A language model can, and it will do it politely, which is worse. If you run agents in India, the guardrail against upselling on a service call belongs in the prompt, in the tooling, and in whatever reviews transcripts weekly.
Language sits alongside this. India is not one calling market, and an agent that handles Hindi, English and a regional language in the same conversation is table stakes rather than a differentiator. Our guide to multilingual voice AI covers how that is built, and the global compliance guide puts India next to the other markets you may be dialing. If the United States is one of them, the TCPA rules run on completely different machinery, and satisfying one does not satisfy the other.
KEY TAKEAWAYS
- India enforces through connectivity, not fines. A second established violation disconnects your lines for a year and blacklists you across all operators.
- The Second Amendment of February 2025 requires every sender to notify its originating operator in writing, in advance, that it uses an auto dialer or robo-calls, and why.
- Promotional auto dialed calls belong on 140 series numbers, service and transactional on 1600.
- Transactional means within thirty minutes of a customer initiated action. Promotional content inside a service call makes the whole call promotional.
- Penalties attach to the sender's whole estate of telecom resources, including lines that were never used for the offending calls.
CALLING INDIA
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Twenty minutes on registration, numbering series, and where your agent could wander across a category boundary. We run agents into this market.
Book a 20 minute review →FAQ
Do we need to tell the telecom operator that we are using an AI voice agent in India?
Yes. The TCCCPR Second Amendment of 12 February 2025 substituted a Regulation 4 requiring every sender to notify the originating access provider in advance, in writing, about the use of an auto dialer or robo-calls and the intended objective of those calls. An outbound AI voice agent falls within that description.
What is the difference between the 140 and 1600 number series?
TRAI's framework puts promotional voice calls made through an auto dialer on 140 series numbers, and service and transactional calls made the same way on the 1600 series allotted by the Department of Telecommunications. Because 1600 numbers are meant to signal a trustworthy service call, the obligations attached to them are correspondingly strict.
What happens if we breach the rules?
On a first established violation the access providers bar outgoing services on all telecom resources allotted to the sender, including PRI and SIP trunks and SIMs, for fifteen days, whether or not those particular resources were used. On a second or subsequent violation the resources are disconnected for one year, the sender is blacklisted so no operator will issue new resources, and the devices used are blocked for a year.
When is a call transactional rather than promotional?
A transactional call is one made in response to a customer initiated transaction within thirty minutes of it, such as a one time password or a payment confirmation. If any promotional content is mixed into a transactional or service call, the regulation treats the entire call as promotional, which brings the consent and preference requirements that go with that category.
Is the Third Amendment in force?
Not as of August 2026. TRAI published the draft Telecom Commercial Communications Customer Preference (Third Amendment) Regulations 2026 for consultation in March 2026, with comments and counter comments closing in April and May. It has not been notified in the Official Gazette, so the Second Amendment of February 2025 remains the operative text.
