page_title: Fast automatic restoration
section_title: FASTAR architecture
hierarchical_section_title: Fast automatic restoration / FASTAR architecture
caption_attribution_description: English: this file contains the architecture of at&amp;ts FASTAR
context_page_description: Fast automatic restoration is an automated fast response system developed and deployed by American Telephone & Telegraph in 1992 for the centralized restoration of its digital transport network. FASTAR automatically reroutes circuits over a spare protection capacity when a fiber-optic cable failure is detected, hence increasing service availability and reducing the impact of the outages in the network. Similar in operation is real-time restoration, developed and deployed by MCI and used in the MCI network to minimize the effects of a fiber cut.
context_section_description: FASTAR uses DCS-based mesh restoration architecture. This architecture consists of nodal equipment, central control equipment, and a data communication network interconnecting the nodes to the central controller. The figure on the right explains the architecture of FASTAR and how the different building blocks interact.
caption: Architecture of FASTAR
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