DIRSI – Regional Dialogue on the Information Society – Telecom Regulatory Environment (TRE) Assessment Series Using interviews and a questionnaire administered to a statistically significant cross-section of industry stakeholders and experts, the TRE assessment traverses six dimensions of regulatory risk (market entry, access to scarce resources, interconnection, tariff regulation, regulation of anti-competitive practice and universal service) for both the fixed and mobile sectors. The TRE methodology focuses on the environment as a whole, rather than only on the regulatory agency. This broadens the scope and usefulness of the study to different actors. DIRSI and LIRNE.NET are currently undertaking TRE studies in Bolivia, Peru and Ecuador.