**Timing and Synchronization System Capability (TSSC) is an emerging service and is anticipated to be available to our mission partners beginning March 30, 2018. **
TSSC provides precision time-of-day, rigorously traceable to Universal Coordinated Time (UTC) as maintained by the United States Naval Observatory (USNO). It provides precision frequency references, accurately aligned to known UTC references and/or local Atomic Frequency References (AFR) (e.g., Cesium Beam). TSSC distributes Precise Time and Time Interval (PTTI) reference signals at Department of Defense Information Network (DoDIN) sites throughout CONUS and OCONUS as an assured service. Timing and Synchronization (T&S) signals provided by the TSSC will be delivered through a diverse network of time transfer mechanisms, including fixed-node clocks and local (building and/or campus) distribution. The TSSC will be centrally monitored and controlled by the DISA Global Network Operations and Security Center (GNOSC) to ensure service reliability, availability, and accuracy of T&S references.
Four classes of DoDIN sites for the T&S system performance have been identified:
- Class A – High performance, fixed sites
- Class B – Long life, fixed sites
- Class C – Low profile, mobile, and small sites
- Class D – Optical network line timed, remote fixed sites with line timing
Value to our Mission Partners
TSSC will improve the accuracy of DoDIN PTTI and increase reliability, availability, and maintainability through continuous, centralized monitoring and control. Furthermore, the TSSC will significantly reduce the cost of delivering T&S services across the DOD, through the deployment of local T&S distribution capabilities at Defense Information Systems Network (DISN) sites worldwide. It eliminates the need for multiple service components to independently deliver T&S reference signals to the same site or location. This service supports CJCSI 6130.01E, Master Positioning, Navigation and Timing Plan (MPNTP), 1 May 2013, that requires all DOD missions that make reference to time to be able to provide that time in terms of the standard temporal reference defined by UTC as maintained by the USNO Master Clock.