Test Functions
354 MAX-800 Series
OH - SONET/SDH
VT/TU
V5 VT/TU Path Overhead
The V5 byte is allocated to indicate the content of the VT/TU path,
including the status of the mapped payloads. It provides the same
functions for VT/VC paths that the B3, C2, and G1 bytes provide for
STS/STM paths.
BIP-2 is not configurable.
REI, RFI, and RDI: Choices are 0 (disabled), and 1 (enabled).
Signal Label
Bits 5, 6, 7
of V5
Description
SONET SDH
000
a
a. These bytes cannot be selected in receive mode.
Unequipped Unequipped or
supervisory-unequipped
001 Reserved (Equipped - Non-specific)
010 Asynchronous
011 Bit Synchronous
100 Byte Synchronous
101 Extended Signal Label
110 Test Signal, ITU-T 0.181 specific mapping
111
a
VT SPE AIS (TCM) VC-AIS (TCM)
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