... Test FeaturesGeneric framing procedure (GFP)• Conform to ITU-T G.7041 and ANSI T1.105-2001• GFP-F ... VCAT/HO VCATVirtual concatenation(VCAT)• Conform to ITU-T G.707, Telcordia GR253 and ANSIT1.105-2001• SDH ... error performance analysis per ITU-T G.821,G.828,G.829,M.2101, M.2110, M.2120 ... scheme (LCAS)• Conform to ANSI T1.105, ITU-T G.7042, G.707, 783, 806• LCAS protocol emulation• Emulation ...