Recommendation ITU-T G.7041/Y.1303 defines a generic framing procedure (GFP) to delineate octet-aligned, variable-length payloads from higher-level client signals for subsequent mapping into octet-synchronous paths such as those defined in Recommendations ITU T G.707/Y.1322, G.8040/Y.1340 and G.709/Y.1331. This Recommendation defines: - frame formats for protocol data units (PDUs) transferred between GFP initiation and termination points; - mapping procedure for the client signals into GFP; - responses to certain defect conditions. This edition adds the information from both G.7041 Amendment 2 (2008) and G.Imp7041 (11/09).