The TS/SCI Voice service provides secure communication between SCI users and is designed to support the DoD Intelligence Information System (DoDIIS) community through the Defense Intelligence Agency (DIA) Regional Support Centers (RSCs). The service provides global Voice over IP (VoIP) communications for DoD customers within SCI enclaves connected to the TS/SCI IP Data service, and uses stream-based encryption for private voice traffic.
The DIA and the DoDIIS community require a global TS/SCI voice service or capability to support classified sensitive compartmented communications and worldwide intelligence operations. They implemented a VoIP service to use the DoDIIS IP enclaves and the JWICS IP network to allow for scalability, ease of implementation, and affordability.