The organization maintains an internet-based communication tool - the Expert Communication System (ECS) - for users nominated by States Signatories. The ECS is a protected website that provides a platform for discussions, information exchange, meeting schedules and a documents database.

Workshops and training activities
States may benefit from workshops and training activities organized by the CTBTO, in which participants acquire necessary skills for the implementation of the Treaty at the national level.

Each of the three technical divisions has organized workshops and training activities in accordance with their specific tasks.  The IMS Division has organized a number of training activities for station operators and managers about the IMS, its monitoring technologies, and the operation and maintenance of IMS stations.

The IDC has also organized training courses and workshops for analysts and staff of National Data Centres. Building on commonalities, some of these training activities were jointly conducted by the IMS and IDC Divisions. In addition, the IDC has organized training courses for communications experts on the transmission of data through the Global Communications Infrastructure.