Installation
ITU-T / ANSI Equivalent Terms
ITU-T Term
S-n.1 or S-n.2 short haul
STM-n
SOH
Section Overhead (SOH)
Tributary Unit (TU)
TU
TU-AIS
TU FERF / TU RDI
TU REI
VC
Virtual Container
Virtual Container (VC)
VP-RDI (VP-FERF)
VC-RDI (VC-FERF)
NOTE: VC is an ITU-T abbreviation for Virtual Container and an ITU-T / ANSI
abbreviation for (ATM) Virtual Channel. The context of VC must therefore be taken
into account when converting between standards.
4-2
ANSI Term
Short Reach (SR)
STS-n
TOH
Transport Overhead (TOH)
Virtual Tributary (VT)
VT
VT AIS (AIS-V)
RDI-V / VT FERF
VT FEBE
SPE
Payload Envelope
Synchronous Payload Envelope (SPE)
VP-RDI
VC-RDI