Telecom operators have started alerting customers that dial-in feature of online meeting applications like Zoom, BlueJeans, Microsoft Teams, etc, may attract international calling rates if toll free numbers are not used.

To this end, operators have sent out alert SMS to customers after the Telecom Regulatory Authority of India (TRAI) directed them to inform customers about the ISD rates being charged for the dial-in feature of such apps.

Both TRAI and telcos have received complaints of bill shock during the last few months.