Table of Contents
1 Scope
2 References
3 Definitions
4 Abbreviations and acronyms
5 System reference diagram
6 Signals and modulation
6.1 Description of signals
6.1.1 4.3125 kHz signalling family
6.1.2 4 kHz signalling family
6.2 Modulation
6.3 Transmit filter characteristics
6.3.1 4.3125 kHz signalling family
6.3.2 4 kHz signalling family
7 Description of messages
7.1 CL – Capabilities list
7.2 CLR – Capabilities list + request
7.3 MR – Mode request
7.4 MS – Mode select
7.5 MP – Mode proposal
7.6 ACK(1) – Acknowledgement, type 1
7.7 ACK(2) – Acknowledgement, type 2
7.8 NAK-EF – Negative Acknowledgement, errored frame
7.9 NAK-NR – Negative Acknowledgement, not ready
7.10 NAK-NS – Negative Acknowledgement, not supported
7.11 NAK-CD – Negative Acknowledgement, cleardown
7.12 REQ-MS – Request MS message
7.13 REQ-MR – Request MR message
7.14 REQ-CLR – Request CLR message
7.15 REQ-RTX – Retransmission message
8 Structure of messages
8.1 Format convention
8.2 Frame structure
8.3 Frame check sequence field
8.4 Octet transparency
8.5 Inter-frame time fill
9 Message coding format
9.1 General
9.2 Coding format for parameters in the I and S fields
9.2.1 Parameter classification
9.2.2 Order of transmission of parameters
9.2.3 Delimiting and parsing of parameter blocks
9.3 Identification field (I)
9.3.1 Message type field
9.3.2 Version number field
9.3.3 Additional information field
9.3.3.1 Vendor ID information block
9.3.3.2 Retransmission information block
9.3.4 Parameter field
9.4 Standard information field (S)
9.4.1 ITU-T G.992.1 Annex A Par(2)/Par(3) parameters
9.4.2 ITU-T G.992.1 Annex B Par(2)/Par(3) parameters
9.4.3 ITU-T G.992.1 Annex C Par(2)/Par(3) parameters
9.4.4 ITU-T G.992.2 Annexes A/B Par(2)/Par(3) parameters
9.4.5 ITU-T G.992.2 Annex C Par(2)/Par(3) parameters
9.4.6 ITU-T G.992.1 Annex H Par(2)/Par(3) parameters
9.4.7 ITU-T G.992.1 Annex I Par(2)/Par(3) parameters
9.4.8 ITU-T G.991.2 Annexes A/F Par(2)/Par(3) parameters
9.4.9 ITU-T G.991.2 Annexes B/G Par(2)/Par(3) parameters
9.4.10
9.4.11
9.4.12 ETSI MCM VDSL Par(2)/Par(3) parameters
9.4.13
9.4.14
9.4.15 ITU-T G.992.3 Annexes A/L Par(2)/Par(3) parameters
9.4.16 ITU-T G.992.3 Annex B Par(2)/Par(3) parameters
9.4.17 ITU-T G.992.3 Annex I Par(2)/Par(3) parameters
9.4.18 ITU-T G.992.3 Annex J Par(2)/Par(3) parameters
9.4.19 ITU-T G.992.4 Annex A Par(2)/Par(3) parameters
9.4.20 ITU-T G.992.4 Annex I Par(2)/Par(3) parameters
9.4.21 ITU-T G.992.3 Annex C Par(2)/Par(3) parameters
9.4.22 ITU-T G.992.5 Annex A Par(2)/Par(3) parameters
9.4.23 ITU-T G.992.5 Annex B Par(2)/Par(3) parameters
9.4.24 ITU-T G.992.5 Annex I Par(2)/Par(3) parameters
9.4.25 ITU-T G.992.3 Annex M Par(2)/Par(3) parameters
9.4.26 ITU-T G.992.5 Annex J Par(2)/Par(3) parameters
9.4.27
9.4.28
9.4.29 ITU-T G.992.5 Annex M Par(2)/Par(3) parameters
9.4.30 ITU-T G.993.1 Par(2)/Par(3) parameters
9.4.31 ITU-T G.993.1 Annex I Par(2)/Par(3) parameters
9.4.32 ITU-T G.991.2 variable silence period Par(2)/Par(3) parameters
9.4.33 ITU-T G.992.5 Annex C Par(2)/Par(3) parameters
9.4.34 ITU-T G.993.2 Par(2)/Par(3) parameters
9.4.35 ITU-T G.9701 Par(2)/Par(3) parameters
9.5 Non-standard information field (NS)
9.6 Overall message composition
10 ITU-T G.994.1 transactions
10.1 Basic transactions
10.1.1 Transaction A
10.1.2 Transaction B
10.1.3 Transaction C
10.1.4 Transaction D
10.2 Extended transactions
10.2.1 Transaction A:B
10.2.2 Transaction B:A
10.2.3 Transaction A:C
10.2.4 Transaction B:C
10.2.5 Transaction D:C
10.3 Message segmentation
10.4 State transition diagrams
10.5 Retransmission transactions
10.5.1 Transaction RA
10.5.2 Transaction RB
11 Start-up/cleardown procedures
11.1 Duplex start-up procedures
11.1.1 HSTU-R initiated start-up procedure
11.1.2 HSTU-C initiated start-up procedure
11.2 Half-duplex start-up procedures
11.2.1 HSTU-R initiated start-up procedure
11.2.2 HSTU-C initiated start-up procedure
11.3 Cleardown procedure
12 Error recovery procedures
13 Management information base (MIB) elements
13.1 Configuration parameters
13.1.1 GHS A43 carrier set maximum PSD level in downstream (GHS_A43_MAXPSDds)
13.1.2 GHS A43c and B43C carrier set maximum PSD level in downstream (GHS_AB43c_MAXPSDds)
13.1.3 GHS B43 and J43 carrier set maximum PSD level in downstream (GHS_BJ43_MAXPSDds)
13.1.4 GHS V43 carrier set maximum PSD level in downstream
13.1.5 GHS individual carrier maximum PSD level in downstream
Annex A - Support for legacy non-ITU-T G.994.1 devices
Annex B - Operation over multiple wire pairs
Annex C - An operating mode for use in the same cable as TCM-ISDN
C.1 Scope (supplements clause 1)
C.2 Signals and modulation (pertains to clause 6)
C.2.1 Description of signals (modifies clause 6.1)
C.2.1.1 Signalling family (replaces clause 6.1.1)
C.2.2 Modulation (replaces clause 6.2)
C.3 Start-up/cleardown procedures (pertains to clause 11)
C.3.1 Start-up procedures (new)
C.3.1.1 HSTU-R initiated start-up procedure (new)
C.3.1.2 HSTU-C initiated start-up procedure (new)
C.3.2 Interoperability procedure (new)
Appendix I - ITU-T G.994.1 sample sessions
Appendix II - Provider code contact information
Appendix III - Support for legacy DMT-based devices
Appendix IV - Procedure for the assignment of additional ITU-T G.994.1 parameters
IV.1 Introduction
IV.2 Procedure
Appendix V - Rules for code point table numbering
Bibliography