Trai Clarifies: 1600 Series Calls Cannot Be Blocked, 140 Series Can Be DND-Blocked

Summary

Trai has clarified that calls from 1600 number series, used by regulated entities and government, cannot be blocked, while promotional calls from the 140 series can be blocked via the DND registry. The 1600 series is for trustworthy service calls to existing customers, and the 140 series is for registered telemarketers.