"We will take into consideration all valuable comments on differential data pricing. We will come out with the regulation by the month-end," said R.S Sharma, chairman of the Telecom Regulatory Authority of India (TRAI), after an open-house session with stakeholders here.

Crucial to the issue of net neutrality, differential pricing or zero-rating is a practice where Internet service providers do not take into account the content downloaded by subscribers from some platforms while computing their usage tariff.

Proponents of net neutrality call for a uniformity in such tariff. But those on the other side of the fence argue this may be impossible because service providers have to invest huge amounts of money on infrastructure and different bandwidths call for different level of investments.

In fact, the sparring match with Facebook was the result of a chunk of the 2.4 million respondents to watchdog's consultation paper on net neutrality speaking about just one of its many aspects -- saying they supported Free Basics.

A service from Facebook, Free Basics is an app that promises to make Internet accessible to more people by providing them a range of some basic services for free such as news, health, travel, jobs, sports, communication and other information.