Glossary
SONET/SDH Application
461
SONET - VT Path Overhead
SONET - VT Path Overhead
V5: VT Path overhead
The V5 byte provides the same functions for VT paths that the B3, C2, and
G1 bytes provide for STS paths.
Note:
If the signal label in V5 (bits 5, 6, and 7) is 101 the contents of the extended
signal label is valid and contains in a 32 bit frame multiframe as shown
below. See Z7 Structure shown below.
Z7 Structure
J2: VT Path Trace
The J2 Trace byte provides a 16 byte fixed string allowing the receiving
VT PTE to verify its continued connection to the intended transmitting
VT PTE.
Z6: VT Path Growth
The Z6 byte is allocated for future growth.
Содержание FTB-8100 Series
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