Recommendation ITU-T G.808 provides terms, definitions and abbreviations used in Recommendations that describe network protection and restoration. It contains a list of the definitions and abbreviations introduced in Recommendations associated with network protection and restoration. This Recommendation can be considered to be a companion to Recommendations ITU T G.870/Y.1352, ITU T G.8001/Y.1354, ITU T G.8081/Y.1353 and ITU T G.8101/Y.1355. The goal of this Recommendation is to be a single normative source for terms in this subject area. Amendment 1 to Recommendation ITU-T G.808 clarifies the terms used to describe the time intervals related to protection switching (clause 3.2.9).