NEW DELHI, May 28 -- Amid growing scrutiny over Bharti Airtel's 5G Priority Postpaid service, the Telecom Regulatory Authority of India (Trai) on Wednesday met executives of the telecom operator to understand its new offering, according to three people aware of the matter.

The meeting, attended by more than 10 Trai officials including three principal advisors across departments, comes amid concerns within the telecom industry over whether network-slicing based premium services could create preferential access for high-paying users at the expense of prepaid subscribers.

During the meeting, the regulator sought clarity on Airtel's use of the term "fast lane" technology to describe the priority postpaid plans on its website. Discussions al...