Regulator says 140 series filtered 148 crore promotional calls as 730 crore SMS were also blocked
Regulator says 'Frequently Blocked' tag could undermine trust in genuine calls
Regulator discusses linking spam reports with telecom DLT and DND systems
Regulator says designated numbers cannot be tagged or blocked except through DND preferences
CEO says 51 million calls go unanswered daily as spam visibility remains restricted
