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EXFO IQS-8100 Series Transport Blazer for IQS-600 User Manual

Page 683

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Glossary

SONET/SDH Application

669

Next-Gen - Virtual Concatenation (VCAT)

SONET VTn-Xv

SDH VCn-Xv

To define its multiframe, LO VCAT uses a similar concept as that
described above for HO VCAT groups. For the LO VCGs, low-order path
overhead bytes Z7 (bit 2) [SONET] and K4 (bit 2) [SDH] are used to
support the multiframe structure and specify the MFI and SQ values.