Central Monitoring System

The Central Monitoring System, abbreviated to CMS, is a centralized telephone interception provisioning system installed by the Centre for Development of Telematics (C-DOT), an Indian Government owned telecommunications technology development centre, and operated by Telecom Enforcement Resource and Monitoring (TERM) Cells. The CMC system is set up in each major state collocated with the TERM Cells.

Source: Wikipedia — Central Monitoring System (CC BY-SA 4.0)