Glossary
SONET/SDH Application
457
SONET - Line Overhead (LOH)
Z2: Growth/FEBE (Far-End Block Error)
The Z2 byte is allocated for future growth. This byte is located in the first
and second STS-1s of an STS-3, and the first, second, and fourth through n
of a STS-n signal (12
≤
n
≤
48).
E2: Orderwire
The Orderwire provides a 64 Kbps voice channel for communication
between LTEs. This byte is only defined for the first STS-1 frame of a
composite signal.
Содержание FTB-8100 Series
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