India, March 9 -- The third-largest telecom operator in India, Vodafone Idea (VI), has performed strongly in Mumbai in terms of voice call performance, according to a recent assessment by the Telecom Regulatory Authority of India (TRAI). The findings are part of TRAI's periodic network performance monitoring, which evaluates the quality of telecom services delivered by operators across different licensed service areas in the country.

TRAI regularly conducts drive tests and performance audits to measure key indicators of service quality, including call setup success rate, call setup time, and call drop rate. These metrics are used to assess how reliably telecom networks enable users to initiate and maintain voice calls, particularly in de...