Service State : The state of a PSN Service, in relation to thresholds defined in the Service Level Agreement for that PSN Service. Possible states are: "up", "down", "impacted", "degraded", "oversubscribed" and "investigating"
Public Services Network (PSN), PSN Glossary, version 1.2 PSN Document Management and Change Control - version 1.3, Prepared by PSN Core Team, London, UK 2011. https://www.gov.uk/government/uploads/system/uploa ds/attachment_data/file/136008/PSN-Glossary-v1-6.p df, (Public Srvc Network - Brit) {552}