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Glossary

UCC (unsolicited commercial communication)

UCC, short for unsolicited commercial communication, is the term TRAI's TCCCPR uses for spam: commercial calls and messages a person didn't ask for. Since TRAI's amendment of 18 September 2026, A2P calls that weren't declared to the operator in advance are treated as UCC too, and repeated complaints or spam flags lead to action against the sender.

How UCC is caught on Indian calls

The Third Amendment to the TCCCPR, announced by PIB on 18 September 2026 (release ID 2311989), changed how operators find and act on UCC:

  • AI flags. Under a new Regulation 21A, operators use AI and machine learning to spot likely spam callers, and share those flags with each other.
  • Flagged caller IDs. If five or more of one sender's caller IDs are flagged within 10 days, the operator investigates and acts in steps: a fresh KYC check, a bar on outgoing calls, or disconnection.
  • Fewer complaints before action. Three unique complaints in 10 days now trigger action when the operator's AI system has flagged the sender too. The old threshold was five.
  • Appeals. A consumer who disagrees with the decision on a complaint can appeal within 15 days.

People report UCC by calling or texting 1909, through the TRAI DND app, or through their operator's app. TRAI's 2025 amendment to the TCCCPR also provides that repeat offenders can have all their telecom connections cut for a year and be blacklisted as senders.

Why it matters for AI calling

An AI agent can work through a long list quickly, so a badly prepared list can draw complaints just as quickly. Undeclared A2P calls, promotional calls to DND numbers without consent, and repeat calls to people who already said no all invite complaints and flags.

How Kallix handles it

Kallix declares A2P calling for the numbers it provides through Vobiz, and checks every number against the DND register (NCPR) before a campaign dials. A per-person call limit counts every call across your agents and campaigns, retries included. When someone asks the agent to stop calling, it records "do not call" as the outcome and that contact is left out of every campaign. Caller numbers flagged as spam are skipped.

TRAI rules for AI calls

Common questions.

More on the FAQ page, or write to us.

No. An AI call becomes UCC when it breaks the rules, for example an A2P call that wasn't declared to the operator, or a promotional call to someone whose DND preferences block it and who hasn't registered consent.

Under TRAI's 2026 amendment, three unique complaints within 10 days trigger action if the operator's AI system has also flagged the sender. Before the amendment, the threshold was five complaints.

By calling or texting 1909, through the TRAI DND app, or through their telecom operator's app. A consumer who disagrees with the decision on a complaint can appeal within 15 days.

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