TRAI DND rules for telecallers: what the 2026 amendment changes for calling teams

General information, not legal advice. This page summarises what TRAI’s own documents say, as read on trai.gov.in on 28 September 2026. The rules were amended twice in the last two years and some changes are still coming into force, so check the current text or take advice before relying on anything here. These are India’s rules only; if you call customers in other countries, their own regulators decide what is allowed.

What are the TRAI DND rules for telecallers?

TRAI DND rules for telecallers let subscribers block commercial calls through 1909, treat calls from unregistered senders as unsolicited, and punish repeated complaints with barring.

Telodial is not a party to these rules: the obligations sit with the business sending the commercial communication and with telecom providers. The wider checks for buying telecalling software in India as a small team, from GST to dual SIM, sit on a separate page.

• Keep every enquiry in writing; its basis lasts seven days.
• Ask your telecom provider before auto dialling.
• Record refusals permanently on the lead.

The rules are the Telecom Commercial Communications Customer Preference Regulations, 2018 (TCCCPR), notified on 19 July 2018 and amended since, most recently by a Third Amendment dated 18 September 2026. Three points matter most for a small calling team. First, the regulations define commercial communication as a call or message whose primary purpose is to advertise or solicit business, and they state that commercial communication made by a sender not registered with any telecom provider for that purpose is treated as unsolicited. Second, subscribers can block such calls, fully or by category, by calling or texting 1909, and providers must give effect to that within twenty-four hours. Third, complaints now trigger faster, harsher action: barring of all the sender’s numbers for fifteen days on a first violation, and a year’s disconnection on a repeat.

Sources this page relies on

Each was read on trai.gov.in on 28 September 2026:

1. TCCCPR 2018, consolidated version dated 21 May 2026 (trai.gov.in/sites/default/files/2026-05/CA_21052026.pdf). Used for the definitions, the 1909 preference routes and the twenty-four-hour rule. TRAI notes that the gazetted text prevails over the consolidated copy.
2. TCCCPR (Second Amendment) Regulations, 2025, dated 12 February 2025 (trai.gov.in/sites/default/files/2025-02/Regulation_12022025.pdf). Used for the seven-day complaint window and the penalties for unregistered senders.
3. TCCCPR (Third Amendment) Regulations, 2026, dated 18 September 2026 (trai.gov.in/sites/default/files/2026-09/Regulation_18092026.pdf), with TRAI Press Release No. 119 of 2026 of the same date. Used for the enquiry rule, A2P calls, complaint thresholds and the appeal route.

Who must do what, and by when

Entity	Rule	Deadline	Source
Mobile subscriber	Can block commercial calls fully or by category via 1909	Provider must honour it within 24 hours	TCCCPR 2018, reg 7
Subscriber complaining	Complaint must be made within 7 days of the call or message	7 days from receipt	2025 amendment
Unregistered sender	5+ complaints from different people in 10 days: all outgoing suspended, then investigation; 15-day bar first time, 1-year disconnection and blacklist on repeat	Provider acts after notice and reply	2025 amendment
Sender relying on an enquiry	Enquiry must be in writing or digital, kept in verifiable form; basis lasts 7 days from the enquiry	30 days after Gazette publication	2026 amendment, reg 2
Sender using A2P calls, including autodialling	Declare A2P use and the calling numbers to your provider in advance; undeclared A2P calls are treated as spam	60 days after Gazette publication (our reading)	2026 amendment, reg 4
Call management apps	May not blanket-block or spam-tag 140xx, 1600xx or 1601xx series	As notified	2026 amendment, PR 119/2026

All rows read on trai.gov.in on 28 September 2026. The Gazette publication date of the 2026 amendment was not stated on the pages we read, so the exact effective dates were not confirmed.

TRAI DND rules after the September 2026 amendment

According to TRAI’s press release of 18 September 2026 and the amendment text:

• Enquiry-based calling is time-limited. A relationship based on a customer’s enquiry lasts seven days from the enquiry, and the enquiry must be in writing or digital and kept in verifiable form. An enquiry that left no written or digital trace does not meet that definition.
• A2P calls must be declared. Calls started by software without direct human dialling, including autodialling, robo-calls and recorded voices, must be declared to the telecom provider with the numbers used. TRAI’s explanatory note says it rejected requests to exclude calls where a live agent joins.
• Action on fewer complaints. Three or more complaints from different people in ten days, where the operator’s AI system has also flagged the sender’s number, can trigger action.
• Consumers can appeal the resolution of a spam complaint within 15 days.

Do TRAI DND rules cover auto dialers?

Be careful. Telodial’s auto dialer places the next call from the caller’s own SIM once the last one is filed, with the caller on the line from the first ring. The A2P definition covers calls “initiated by an application, software system, or automated platform without direct human dialling”, including autodialling, and TRAI declined to carve out calls with a live agent. We cannot tell you whether your use of any auto dialer, ours included, needs declaring. Ask your telecom provider, and until you have an answer, dialing each number by tap is the conservative choice.

A checklist for a small calling team

• Keep the enquiry in writing. A web form, a WhatsApp message or an email, with its date. In Telodial, map the form’s date into a custom field and the lead’s source tag shows where it came from.
• Call enquiries within days, not weeks. The enquiry basis lasts seven days under the 2026 amendment.
• Ask your provider about registration as a sender (principal entity and header registration are described on TRAI’s UCC pages) if your calls are promotional.
• Record refusals permanently. A “do not call” status on the lead stops anyone ringing again, and an excluded number is kept out of every automation.
• Do not buy or scrape lists. Nothing in the rules makes that comfortable.

Example: a Pune interiors firm checks its calling

Take Anjali, who owns a four-caller interior design firm in Pune that calls about 60 website enquiries a day. Anjali and her firm are hypothetical, and this is not a compliance assessment.

Each enquiry arrives through a web form with a date, so the written record exists. Her callers reach new enquiries within the day, well inside seven days. For older leads she is unsure about, she asks her telecom provider about sender registration and A2P declaration before using the auto dialer on them, and dials manually in the meantime.

Do-not-call rules outside India

TRAI’s rules apply to calls on Indian networks. Other countries run their own systems, for example the National Do Not Call Registry and the TCPA in the United States, the Telephone Preference Service under PECR in the United Kingdom, and the National Do Not Call List in Canada. Their consent rules, calling hours and penalties differ from India’s, so read the regulator’s own pages for each country you call.

When this page is not enough

Whenever money or your numbers are at stake. If you run promotional campaigns, send bulk SMS or WhatsApp, use automated calling at scale, or have received a notice from your provider, read the gazetted text and take proper legal advice.

Related reading: the TRAI glossary entry, the DND glossary entry, and SIM based vs cloud dialer.