India, Sept. 20 -- The Telecom Regulatory Authority of India (TRAI) has tightened its regulatory framework to curb unsolicited commercial communications (UCC), including spam calls and messages, while enhancing accountability of telecom service providers, senders and telemarketers. The regulator has introduced the Telecom Commercial Communication Customer Preference (Third Amendment) Regulations, 2026, following a consultation process that began on March 13. TRAI had sought stakeholder views on measures including AI/ML-based detection of suspected UCC, stronger complaint-based enforcement, regulation of Application-to-Person (A2P) calls, recognition of legacy consent, a consumer appeal mechanism and safeguards against misuse of headers an...