�1���� Scope��������
�2���� References�������������
�3���� Definitions
�4���� Abbreviations and acronyms�����������
�5���� Reference models�
������� 5.1���� ATU functional model������������
������� 5.2���� User plane protocol reference model
������� 5.3���� Management plane reference model
������� 5.4���� Application models���
�6���� Transport protocol‑specific transmission convergence (TPS‑TC)
function��������
������� 6.1���� Transport capabilities������������
������� 6.2���� Interface signals and primitives����������
������� 6.3���� Control parameters��
������� 6.4���� Data plane procedures����������
������� 6.5���� Management plane procedures���������
������� 6.6���� Initialization procedure����������
������� 6.7���� On‑line reconfiguration���������
������� 6.8���� Power management mode����
�7���� Physical media‑specific transmission convergence (PMS‑TC)
function������������
������� 7.1���� Transport capabilities������������
������� 7.2���� Additional functions��
������� 7.3���� Block interface signals and primitives
������� 7.4���� Block diagram and internal reference point signals�����
������� 7.5���� Control parameters��
������� 7.6���� Frame structure��������
������� 7.7���� Data plane procedures����������
������� 7.8���� Control plane procedures������
������� 7.9���� Management plane procedures���������
������ 7.10���� Initialization procedures�������
������ 7.11���� On‑line reconfiguration��������
������ 7.12���� Power management mode���
�8���� Physical media-dependent function
������� 8.1���� Transport capabilities������������
������� 8.2���� Additional functions��
������� 8.3���� Block interface signals and primitives
������� 8.4���� Block diagram and internal reference point signals�����
������� 8.5���� Control parameters��
������� 8.6���� Constellation encoder for data symbols����������
������� 8.7���� Constellation encoder for synchronization and L2 exit symbols
������� 8.8���� Modulation��
������� 8.9���� Transmitter dynamic range���
������ 8.10���� Transmitter spectral masks��
������ 8.11���� Control plane procedures�����
������ 8.12���� Management plane procedures��������
������ 8.13���� Initialization procedures�������
������ 8.14���� Short initialization procedures�����������
������ 8.15���� Loop diagnostics mode procedures���
������ 8.16���� On‑line reconfiguration of the PMD function�
������ 8.17���� Power management in the PMD function������
�9���� Management protocol‑specific transmission convergence (MPS‑TC)
functions������������
������� 9.1���� Transport functions���
������� 9.2���� Additional functions��
������� 9.3���� Block interface signals and primitives
������� 9.4���� Management plane procedures���������
������� 9.5���� Power management�
10���� Dynamic behaviour������������
������ 10.1���� Initialization
���� ��10.2���� On‑line reconfiguration (OLR)�����������
������ 10.3���� Power management
Annex A � Specific requirements for an ADSL system operating in the frequency
band above POTS����
������� A.1���� ATU‑C functional characteristics (pertains to clause 8)�������������
������� A.2���� ATU‑R functional characteristics (pertains to clause 8)�������������
������� A.3���� Initialization�
������� A.4���� Electrical characteristics�������
Annex B � Specific requirements for an ADSL system operating in the frequency
band above ISDN as defined in Appendices I and II of Recommendation ITU‑T
G.961����
������� B.1���� ATU‑C functional characteristics (pertains to clause 8)�������������
������� B.2���� ATU‑R functional characteristics (pertains to clause 8)�������������
������� B.3���� Initialization�
������� B.4���� Electrical characteristics�������
Annex C � Specific requirements for an ADSL system operating in the same cable
as ISDN as defined in Appendix III of Recommendation ITU‑T G.961����
Annex D � ATU‑C and ATU‑R state diagrams����
������� D.1���� Introduction�
������� D.2���� Definitions���
������� D.3���� State diagrams���������
����� Page
Annex E � POTS and ISDN basic access splitters����
������� E.1���� Type 1 � POTS splitter � Europe���������
������� E.2���� Type 2 � POTS splitter � North America����������
������� E.3���� Type 3 � ISDN (ITU‑T G.961 Appendix I or II)
splitter � Europe��
������� E.4���� Type 4 � POTS splitter � Japan������������
Annex F � ATU‑x performance requirements for region A (North
America)����
������� F.1���� Performance requirements for operation of ADSL over POTS (Annex
A)������������
������� F.2� ���Performance requirements for operation of all‑digital
mode ADSL (Annex I)�����
Annex G � ATU‑x performance requirements for region B (Europe)����
������� G.1���� Performance requirements for operation of ADSL over POTS (Annex
A)������������
������� G.2���� Performance requirements for operation of ADSL over ISDN (Annex
B)������������
������� G.3���� Performance requirements for operation of all‑digital
mode ADSL (Annex I)����
������� G.4���� Performance requirements for operation of all‑digital
mode ADSL (Annex J)����
Annex H � Specific requirements for a synchronized symmetrical DSL (SSDSL)
system operating in the same cable binder as ISDN as defined in Appendix III of
Recommendation ITU‑T G.961����
Annex I � All‑digital mode ADSL with improved spectral compatibility with
ADSL over POTS����
������� I.1���� ��������� ATU‑C functional characteristics (pertains to
clause 8)����
������� I.2���� ��������� ATU‑R functional characteristics (pertains to
clause 8)����
������� I.3���� ��������� Initialization������
������� I.4���� ��������� Electrical characteristics������������
Annex J � All‑digital mode ADSL with improved spectral compatibility with
ADSL over ISDN����
������� J.1���� �������� ATU‑C functional characteristics (pertains to
clause 8)����
������� J.2���� �������� ATU‑R functional characteristics (pertains to
clause 8)����
������� J.3���� �������� Initialization������
� ������J.4���� �������� Electrical characteristics������������
Annex K � TPS‑TC functional descriptions����
������� K.1���� STM transmission convergence (STM‑TC) function������
������� K.2���� ATM transmission convergence (ATM‑TC) function�����
������� K.3���� Packet transmission convergence function (PTM‑TC)��
Annex L � Specific requirements for a Reach Extended ADSL2 (READSL2) system
operating in the frequency band above POTS����
������� L.1���� ATU‑C functional characteristics (pertains to clause 8)
������� L.2���� ATU‑R functional characteristics (pertains to clause 8)
������� L.3���� Initialization�
������� L.4���� Electrical characteristics��������
Annex M � Specific requirements for an ADSL system with extended� upstream
bandwidth, operating in the frequency� band above POTS����
�� �����M.1���� ATU‑C functional characteristics (pertains to clause 8)�����������
������� M.2���� ATU‑R functional characteristics (pertains to clause 8)�����������
������� M.3���� Initialization�������������
������� M.4���� Electrical characteristics������
Annex N � 64/65-octet PTM‑TC sublayer functional specifications����
������� N.1���� Scope�����������
������� N.2���� References��
������� N.3���� PTM‑TC functions�����
������� N.4���� Surveillance primitives����������
Annex O���� �������
Annex P � Reduced downstream aggregate transmit power requirements����
������� P.1 ����Scope�����������
������� P.2���� Downstream ATP requirements����������
������� P.3���� Reduced downstream ATP requirements��������
Appendix I � ATM layer to physical layer logical interface����
Appendix II � Compatibility with other customer premises equipment����
Appendix III � The impact of primary protection devices on line balance����
����� III.1���� Scope������������
����� III.2���� Background���
����� III.3���� Recommended maximum capacitance of overvoltage protectors����������
����� III.4���� Capacitance matching requirements of overvoltage protectors
����� III.5���� References����
Appendix IV � Example overlapped PSD masks� for use in a TCM‑ISDN
crosstalk environment����
������ IV.1���� Example downstream PSD masks for use with profiles 5 and 6
������ IV.2���� Example downstream PSD mask for use with profile 3
Appendix V � Constraints on delay, impulse noise protection, overhead rate,�
and net data rate when bonding����
Appendix VI � Packet layer to physical layer logical interface����
������ VI.1���� Data flow�����
������ VI.2���� Synchronization flow
������ VI.3���� Control flow�
������ VI.4���� OAM flow����
Appendix VII � ADSL2 automoding����
����� VII.1���� Definition of automode���������
����� VII.2���� Automode policies����
����� VII.3���� Automode performance requirements������������
����� Page
Appendix VIII � Impact of loop and ATU impedance mismatch on the Hlog
accuracy����
���� VIII.1���� Impact of impedance mismatch on the Hlog error������
���� VIII.2���� Setting the accuracy requirement for HLOGps�������������
Bibliography����