1 Scope
2 References
3 Definitions
4 Abbreviations and acronyms
5 Overview
6 Functional reference model
7 TPS-TC function
7.1 ATM TPS-TC
7.2 PTM TPS-TC with 64/65-octet encapsulation
8 Retransmission functions
8.1 DTU framer
8.2 Retransmission multiplexer
8.3 Transmitter retransmission state machine
8.4 Retransmission return channel (RRC)
8.5 Roundtrip
8.6 Retransmission control parameters
9 PMS-TC function
9.1 Scrambler
9.2 FEC
9.3 Latency paths multiplexer
9.4 Framing parameters
9.5 Impulse noise protection
10 PMD function
10.1 Definition of MTBE
10.2 General definition of signal‑to‑noise ratio margin
10.3 Definition of MTBE_min
10.4 Accelerated testing of MTBE
11 Operation, administration and maintenance (OAM) management function
11.1 Configuration parameters
11.2 Test parameters
11.3 OAM line-related primitives
11.4 Performance monitoring parameters
11.5 Channel initialization policies
12 DTU counters
13 On-line reconfiguration (OLR)
13.1 Bit swapping
13.2 Seamless rate adaptation (SRA)
13.3 SOS
13.4 Transition mechanism for type 5 and type 6 modified OLR commands
Annex A – Support of ITU‑T G.998.4 with ITU‑T G.992.3
A.1 Specific requirements
A.2 Initialization
A.3 Management plane procedures
A.4 OLR timing of changes in control parameters
Annex B – Support of ITU‑T G.998.4 with ITU‑T G.992.5
B.1 Specific requirements
B.2 Initialization
B.3 Management plane procedures
B.4 OLR timing of changes in control parameters
Annex C – Support of ITU‑T G.998.4 with ITU‑T G.993.2
C.1 Specific requirements
C.2 Initialization
C.3 Management plane procedures
C.4 Timing of changes in control parameters
Annex D – Support of ITU‑T G.998.4 with ITU‑T G.993.5
Annex E – VDSL2 low power mode operation
E.1 Scope
E.2 Functionality
E.3 Link states and link state diagram
E.4 CO‑MIB configuration and status reporting
E.5 Coordination of link state transitions between VTU‑O and
VTU‑R
Appendix I – Transmit state machine
I.1 Reference transmit state machine
I.2 Last chance retransmission state machine
Appendix II – Motivation of MTBE accelerated test
Bibliography