The new guidelines will impact all individuals and entities involved in making or facilitating such communications.
India is taking decisive steps to protect users from the onslaught of unwanted promotional communications.
Trai's decision follows instances of promotional messages being sent to users without verified consent.
From April 1 onwards, the call rates and mobile internet data rates would likely increase.
The debate on IUC (Interconnect Usage Charge) in the telecom industry is being continued for a while.