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ETSI/ANSI Terminology
ETSI/ANSI Conversion and Equivalent Terms
MS-RDI Line FERF / RDI-L
Multiplexer Section Overhead Line Overhead
Network Node Interface Line Interface
OOF SEF (severely errored frame defect)
Path AIS / AU-AIS AIS-P
Path REI / HP REI REI-P
Path FERF / HP RDI RDI-P
Path IEC / AU-IEC IEC-P
Path Overhead Path Overhead
Regenerator Repeater
Regenerator Section (RS) Section
Regenerator Section Overhead Section Overhead
Remote Alarm Indicator RAI
RS-DCC Section DCC (DCC-S)
Section Overhead (SOH) Transport Overhead (TOH)
S-n.1 or S-n.2 short haul Short Reach (SR)
SOH TOH
STM-m OC-n / STS-n (where m= n÷ 3 for m ≥ 1
STM-0 STS-1
STM-1 OC3c / STS-3c
STM-4 OC-12 / STS-12
STM-16 OC-48 / STS-48
Tributary Unit (TU) Virtual Tributary (VT)
Table 3 ETSI / ANSI Terminology , continued
ETSI Term ANSI Term