This document discusses telecommunication sector negotiations at the WTO, focusing on case studies of India, Sri Lanka, and Malaysia. It explains the framework of the General Agreement on Trade in Services and major rules under the telecommunication sector agreement. For each country case study, it outlines the historical regulatory framework and telecom market structure, the country's commitments under the WTO Basic Telecommunications Agreement, and some subsequent market developments. The major regulatory principles in the Agreement are also summarized, including competitive safeguards, interconnection, universal service obligations, licensing transparency, independent regulators, and allocation of scarce resources.