1 Scope
2 References
3 Definitions
4 Abbreviations and acronyms
5 Reference models
5.1 VTU functional model
5.2 User plane protocol reference model
5.3 Management plane reference model
5.4 Application reference models
6 Profiles
6.1 Definition
6.2 Profile parameter definitions
6.3 Profile compliance
7 Transmission medium interface characteristics
7.1 Duplexing method and band plan construction
7.2 Power spectral density (PSD)
7.3 Termination impedance
7.4 Longitudinal conversion loss
8 Transport protocol specific transmission convergence (TPS‑TC)
function
8.1 The user data TPS‑TC
8.2 Management TPS‑TC (MPS‑TC)
8.3 Network timing reference TPS‑TC (NTR‑TC)
8.4 Time‑of‑day TPS‑TC (ToD‑TC)
9 Physical media specific transmission convergence (PMS‑TC) sublayer
9.1 PMS‑TC functional model
9.2 Scrambler
9.3 Forward error correction
9.4 Interleaving
9.5 Framing
9.6 Impulse noise protection (INPp)
9.7 Delay
9.8 Bit error ratio (BER)
9.9 Delay variation
10 Physical media dependent (PMD) function
10.1 PMD functional model
10.2 DMT superframe
10.3 Symbol encoder for data symbols
10.4 Modulation
10.5 Symbol encoder for sync symbol
10.6 Symbol encoder for initialization
11 Operation and maintenance (OAM)
11.1 OAM functional model
11.2 VDSL2 management entity (VME)
11.3 OAM primitives
11.4 OAM parameters
11.5 Data gathering function
12 Link activation methods and procedures
12.1 Overview
12.2 Special operations channel (SOC)
12.3 Initialization procedure
12.4 Loop diagnostic mode procedures
12.5 Fast start-up
13 On‑line reconfiguration (OLR)
13.1 Types of on‑line reconfiguration
13.2 Control parameters
13.3 Timing of changes in subcarrier configuration
13.4 Receiver initiated procedure
14 Electrical requirements
14.1 Termination impedance model
14.2 Service splitters
Annex A – Region A (North America)
A.1 Band plan
A.2 Limit PSD masks
A.3 UPBO reference PSDs
Annex B – Region B (Europe)
B.1 Band plans
B.2 Limit PSD mask options
B.3 UPBO reference PSDs
B.4 Template PSD
B.5 Compliance
Annex C – Region C (Japan)
C.1 Band plan
C.2 Limit PSD masks
C.3 VDSL2 system with PSD reduction at frequencies below DPBOFMAX
C.4 Upstream power back‑off (UPBO) PSD masks
Page
C.5 Service Splitter
C.6 Test loops and crosstalk disturbers
Annex D – Long Reach VDSL2
D.1 Introduction
D.2 Overview of the initialization procedure
D.3 ITU-T G.994.1 handshake phase
D.4 Signals sent by the VTU‑O during
the channel discovery phase
D.5 Signals sent by the VTU‑R during the channel discovery
phase
D.6 O/R‑P‑PROBING‑LR signal exchange
D.7 O/R‑P‑TRAINING‑LR signal exchange
D.8 ITU-T G.993.2 channel
discovery phase and Training phase in long loop operation
D.9 Definition of Limit
PSD masks
D.10 Management
D.11 Nominal aggregate
transmit power (NOMATP)
Annex E
Annex F
Annex G
Annex H
Annex J
Annex K
Annex L – TPS‑TC functional descriptions
L.1 STM transmission convergence (STM‑TC) function
L.2 ATM transmission convergence (ATM‑TC) function
L.3 Packet transmission convergence function (PTM‑TC)
Annex M – Time‑of‑day distribution over VDSL2 links
M.1 Time‑of‑day distribution operational overview
M.2 Definitions
M.3 Abbreviations
M.4 VTU functional model
M.5 TPS‑TC function
M.6 eoc communication protocol
M.7 ToD TPS‑TC (ToD‑TC)
M.8 Mapping of OH data
M.9 eoc transmission protocol
M.10 Frequency synchronization command
M.11 Time synchronization command and responses
M.12 Updates to initialization
Annex N – Region D (China)
N.1 Band plans
N.2 Limit PSD mask options
N.3 UPBO reference PSDs
N.4 Template PSD
N.5 Compliance
Annex O
Annex P – Short reach VDSL2 with reduced power and enhanced data rate
P.1 Scope
P.2 Reduced ATP
P.3 Minimum bidirectional net data rate capability
P.4 ITU-T G.998.4 Annex D support for enhanced net data rates with
ITU-T G.998.4
P.5 SRA support
P.6 TPS-TC
Annex Q – Enhanced data rate 35 MHz VDSL2 with 4.3125 kHz subcarrier
spacing
Q.1 Scope
Q.2 Capabilities related to the profile
Q.3 ITU-T G.998.4 Annex D support for enhanced net data rates
Q.4 SRA
support
Q.5 TPS-TC
Q.6 Additional
changes to ITU-T G.993.2 for operation according to profile 35b
Annex R
Annex S
Annex T
Annex U
Annex V
Annex W
Annex X – ITU-T G.993.5‑friendly ITU-T G.993.2 operation in the
downstream direction
X.1 Power management commands and responses (clause 11.2.3.9)
X.2 Initialization procedure (supplements clause 12.3)
Annex Y – Full ITU-T G.993.5-friendly ITU-T G.993.2 operation
Y.1 Initialization procedure (supplements clause 12.3)
Y.2 R-MSG1 (supplements clause 10.3.2.2 of [ITU-T G.993.5])
Y.3 O‑TA_UPDATE (supplements clause 10.4.2.1 of [ITU-T
G.993.5])
Y.4 R‑P‑VECTOR 2 (replaces clause 10.4.4.5 of [ITU-T
G.993.5])
Y.5 O‑PMS (supplements clause 10.5.2.1 of [ITU-T G.993.5])
Y.6 eoc messages for backchannel configuration (replaces clause 8.1
of [ITU‑T G.993.5])
Page
Y.7 Loop diagnostic mode procedures (replaces clause 12.4)
Appendix I – Example values of DPBO parameters to protect ADSL2plus for clause
C.3
I.1 Example PSD parameters
I.2 Example Cable parameters
I.3 Example frequency parameters
Appendix II – Impact of loop and VTU impedance mismatch on the Hlog
accuracy
Bibliography