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Copyright © 2012 IEEE. All rights reserved. 1 IEEE Standard for Ethernet SECTION FIVE This section includes Clause 56 through Clause 77 and Annex 57A through Annex 76A. SECOND PRINTING: 28 June 2013. Contents 56. Introduction to Ethernet for subscriber access networks ...................................................................... 35 56.1 Overview..................................................................................................................................... 35 56.1.1 Summary of P2P sublayers ................................................................................................. 39 56.1.2 Summary of P2MP sublayers ............................................................................................. 39 56.1.2.1 Multipoint MAC Control Protocol (MPCP) ............................................................. 39 56.1.2.2 Reconciliation Sublayer (RS) and media independent interfaces ............................. 40 56.1.3 Physical Layer signaling systems ....................................................................................... 40 56.1.4 Management........................................................................................................................ 44 56.1.5 Unidirectional transmission ................................................................................................ 44 56.2 State diagrams ............................................................................................................................. 44 56.3 Protocol implementation conformance statement (PICS) proforma........................................... 44 57. Operations, Administration, and Maintenance (OAM) ........................................................................ 47 57.1 Overview..................................................................................................................................... 47 57.1.1 Scope ................................................................................................................................... 47 57.1.2 Summary of objectives and major concepts ....................................................................... 47 57.1.3 Summary of non-objectives ................................................................................................ 48 57.1.4 Positioning of OAM within the IEEE 802.3 architecture ................................................... 48 57.1.5 Compatibility considerations .............................................................................................. 48 57.1.5.1 Application................................................................................................................ 48

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  • IEEE Standard for Ethernet

    SECTION FIVE

    This section includes Clause 56 through Clause 77 and Annex 57A through Annex 76A.

    SECOND PRINTING: 28 June 2013.

    Contents

    56. Introduction to Ethernet for subscriber access networks ...................................................................... 35

    56.1 Overview..................................................................................................................................... 3556.1.1 Summary of P2P sublayers ................................................................................................. 3956.1.2 Summary of P2MP sublayers ............................................................................................. 39

    56.1.2.1 Multipoint MAC Control Protocol (MPCP) ............................................................. 3956.1.2.2 Reconciliation Sublayer (RS) and media independent interfaces............................. 40

    56.1.3 Physical Layer signaling systems ....................................................................................... 4056.1.4 Management........................................................................................................................ 4456.1.5 Unidirectional transmission ................................................................................................ 44

    56.2 State diagrams............................................................................................................................. 4456.3 Protocol implementation conformance statement (PICS) proforma........................................... 44

    57. Operations, Administration, and Maintenance (OAM) ........................................................................ 47

    57.1 Overview..................................................................................................................................... 4757.1.1 Scope................................................................................................................................... 4757.1.2 Summary of objectives and major concepts ....................................................................... 4757.1.3 Summary of non-objectives ................................................................................................ 4857.1.4 Positioning of OAM within the IEEE 802.3 architecture ................................................... 4857.1.5 Compatibility considerations .............................................................................................. 48

    57.1.5.1 Application................................................................................................................ 48Copyright 2012 IEEE. All rights reserved. 1

  • 57.1.5.2 Interoperability between OAM capable DTEs ......................................................... 4857.1.5.3 MAC Control PAUSE .............................................................................................. 4957.1.5.4 Interface to MAC Control client ............................................................................... 4957.1.5.5 Frame loss during OAM remote loopback ............................................................... 49

    57.1.6 State diagram conventions .................................................................................................. 4957.2 Functional specifications ............................................................................................................ 49

    57.2.1 Interlayer service interfaces ................................................................................................ 4957.2.2 Principles of operation ........................................................................................................ 5057.2.3 Instances of the MAC data service interface ...................................................................... 5057.2.4 Responsibilities of OAM client .......................................................................................... 5057.2.5 OAM client interactions...................................................................................................... 51

    57.2.5.1 OAMPDU.request..................................................................................................... 5157.2.5.1.1 Function .......................................................................................................... 5157.2.5.1.2 Semantics of the service primitive.................................................................. 5157.2.5.1.3 When generated .............................................................................................. 5157.2.5.1.4 Effect of receipt .............................................................................................. 51

    57.2.5.2 OAMPDU.indication ................................................................................................ 5157.2.5.2.1 Function .......................................................................................................... 5157.2.5.2.2 Semantics of the service primitive.................................................................. 5257.2.5.2.3 When generated .............................................................................................. 5257.2.5.2.4 Effect of receipt .............................................................................................. 52

    57.2.5.3 OAM_CTL.request ................................................................................................... 5257.2.5.3.1 Function .......................................................................................................... 5257.2.5.3.2 Semantics of the service primitive.................................................................. 5257.2.5.3.3 When generated .............................................................................................. 5357.2.5.3.4 Effect of receipt .............................................................................................. 53

    57.2.5.4 OAM_CTL.indication............................................................................................... 5357.2.5.4.1 Function .......................................................................................................... 5357.2.5.4.2 Semantics of the service primitive.................................................................. 5357.2.5.4.3 When generated .............................................................................................. 5457.2.5.4.4 Effect of receipt .............................................................................................. 54

    57.2.6 Instances of the OAM internal service interface ................................................................ 5457.2.7 Internal block diagram ........................................................................................................ 5457.2.8 OAM internal interactions .................................................................................................. 55

    57.2.8.1 OAMI.request ........................................................................................................... 5557.2.8.1.1 Function .......................................................................................................... 5557.2.8.1.2 Semantics of the service primitive.................................................................. 5557.2.8.1.3 When generated .............................................................................................. 5557.2.8.1.4 Effect of receipt .............................................................................................. 55

    57.2.8.2 OAMI.indication....................................................................................................... 5557.2.8.2.1 Function .......................................................................................................... 5557.2.8.2.2 Semantics of the service primitive.................................................................. 5657.2.8.2.3 When generated .............................................................................................. 5657.2.8.2.4 Effect of receipt .............................................................................................. 56

    57.2.9 Modes.................................................................................................................................. 5657.2.9.1 Active mode.............................................................................................................. 5757.2.9.2 Passive mode............................................................................................................. 57

    57.2.10 OAM events ........................................................................................................................ 5757.2.10.1 Critical link events .................................................................................................... 5757.2.10.2 Link events................................................................................................................ 5757.2.10.3 Local event procedure............................................................................................... 5757.2.10.4 Remote event procedure ........................................................................................... 58

    57.2.11 OAM remote loopback ....................................................................................................... 5857.2.11.1 Initiating OAM remote loopback.............................................................................. 582 Copyright 2012 IEEE. All rights reserved.

  • 57.2.11.2 During OAM remote loopback ................................................................................. 5957.2.11.3 Exiting OAM remote loopback................................................................................. 5957.2.11.4 Loss of OAMPDUs during OAM remote loopback ................................................. 5957.2.11.5 Loss of frames during OAM remote loopback ......................................................... 6057.2.11.6 Timing considerations for OAM remote loopback................................................... 60

    57.2.12 Unidirectional OAM operation ........................................................................................... 6057.3 Detailed functions and state diagrams ........................................................................................ 60

    57.3.1 State diagram variables ....................................................................................................... 6157.3.1.1 Constants................................................................................................................... 6157.3.1.2 Variables ................................................................................................................... 6157.3.1.3 Messages ................................................................................................................... 6357.3.1.4 Counters .................................................................................................................... 6457.3.1.5 Timers ....................................................................................................................... 64

    57.3.2 Control ................................................................................................................................ 6557.3.2.1 OAM Discovery........................................................................................................ 65

    57.3.2.1.1 FAULT state ................................................................................................... 6657.3.2.1.2 ACTIVE_SEND_LOCAL state...................................................................... 6657.3.2.1.3 PASSIVE_WAIT state ................................................................................... 6657.3.2.1.4 SEND_LOCAL_REMOTE state .................................................................... 6657.3.2.1.5 SEND_LOCAL_REMOTE_OK state ............................................................ 6657.3.2.1.6 SEND_ANY state ........................................................................................... 6657.3.2.1.7 Sending Discovery status to peer.................................................................... 66

    57.3.2.2 Transmit .................................................................................................................... 6757.3.2.2.1 RESET state .................................................................................................... 6757.3.2.2.2 WAIT_FOR_TX state..................................................................................... 6757.3.2.2.3 Expiration of pdu_timer.................................................................................. 6857.3.2.2.4 Valid request to send an OAMPDU ............................................................... 6857.3.2.2.5 TX_OAMPDU state ....................................................................................... 6857.3.2.2.6 Transmit rules ................................................................................................. 68

    57.3.2.3 Receive rules............................................................................................................. 6857.3.3 Multiplexer.......................................................................................................................... 69

    57.3.3.1 WAIT_FOR_TX state............................................................................................... 6957.3.3.1.1 Valid request to send an OAMPDU ............................................................... 6957.3.3.1.2 Valid request to forward or loopback frame................................................... 69

    57.3.3.2 TX_FRAME state ..................................................................................................... 7057.3.4 Parser .................................................................................................................................. 70

    57.3.4.1 Reception of OAMPDU............................................................................................ 7057.3.4.2 Reception of non-OAMPDUs................................................................................... 71

    57.3.4.2.1 Reception of non-OAMPDU in FWD mode .................................................. 7157.3.4.2.2 Reception of non-OAMPDU in LB mode ...................................................... 7157.3.4.2.3 Reception of non-OAMPDU in DISCARD mode.......................................... 71

    57.4 OAMPDUs.................................................................................................................................. 7157.4.1 Ordering and representation of octets ................................................................................. 7157.4.2 Structure.............................................................................................................................. 72

    57.4.2.1 Flags field ................................................................................................................. 7257.4.2.2 Code field.................................................................................................................. 73

    57.4.3 OAMPDU descriptions....................................................................................................... 7357.4.3.1 Information OAMPDU ............................................................................................. 7457.4.3.2 Event Notification OAMPDU .................................................................................. 7457.4.3.3 Variable Request OAMPDU .................................................................................... 7557.4.3.4 Variable Response OAMPDU .................................................................................. 7657.4.3.5 Loopback Control OAMPDU................................................................................... 7657.4.3.6 Organization Specific OAMPDU ............................................................................. 77

    57.5 OAM TLVs................................................................................................................................. 77Copyright 2012 IEEE. All rights reserved. 3

  • 57.5.1 Parsing ................................................................................................................................ 7757.5.2 Information TLVs ............................................................................................................... 78

    57.5.2.1 Local Information TLV ............................................................................................ 7857.5.2.2 Remote Information TLV ......................................................................................... 8157.5.2.3 Organization Specific Information TLV................................................................... 81

    57.5.3 Link Event TLVs ................................................................................................................ 8157.5.3.1 Errored Symbol Period Event TLV .......................................................................... 8257.5.3.2 Errored Frame Event TLV........................................................................................ 8357.5.3.3 Errored Frame Period Event TLV ............................................................................ 8357.5.3.4 Errored Frame Seconds Summary Event TLV ......................................................... 8457.5.3.5 Organization Specific Event TLVs........................................................................... 85

    57.6 Variables ..................................................................................................................................... 8657.6.1 Variable Descriptors ........................................................................................................... 8657.6.2 Variable Containers ............................................................................................................ 86

    57.6.2.1 Format of Variable Containers when returning attributes ........................................ 8757.6.2.2 Format of Variable Containers when returning packages and objects ..................... 87

    57.6.3 Parsing ................................................................................................................................ 8857.6.4 Variable Branch/Leaf examples.......................................................................................... 8957.6.5 Variable Indications ............................................................................................................ 89

    57.7 Protocol implementation conformance statement (PICS) proforma for Clause 57, Operations, Administration, and Maintenance (OAM) .............................................................. 90

    57.7.1 Introduction......................................................................................................................... 9057.7.2 Identification ....................................................................................................................... 90

    57.7.2.1 Implementation identification.................................................................................. 9057.7.2.2 Protocol summary .................................................................................................... 9157.7.2.3 Major capabilities/options ........................................................................................ 91

    57.7.3 PICS proforma tables for Operation, Administration, and Maintenance (OAM) .............. 9157.7.3.1 Functional specifications .......................................................................................... 9157.7.3.2 Event Notification Generation and Reception .......................................................... 9157.7.3.3 OAMPDUs................................................................................................................ 9457.7.3.4 Local Information TLVs........................................................................................... 9557.7.3.5 Remote Information TLVs........................................................................................ 9557.7.3.6 Organization Specific Information TLVs ................................................................. 96

    57.7.4 Link Event TLVs ................................................................................................................ 9657.7.5 Variables Descriptors and Containers................................................................................. 97

    58. Physical Medium Dependent (PMD) sublayer and medium, type 100BASE-LX10 (Long Wavelength) and 100BASE-BX10 (BiDirectional Long Wavelength)................................................ 99

    58.1 Overview..................................................................................................................................... 9958.1.1 Goals and objectives ........................................................................................................... 9958.1.2 Positioning of this PMD set within the IEEE 802.3 architecture ..................................... 10058.1.3 Terminology and conventions .......................................................................................... 10058.1.4 Physical Medium Dependent (PMD) sublayer service interface...................................... 100

    58.1.4.1 Delay constraints..................................................................................................... 10158.1.4.2 PMD_UNITDATA.request..................................................................................... 10158.1.4.3 PMD_UNITDATA.indication ................................................................................ 10158.1.4.4 PMD_SIGNAL.indication ...................................................................................... 101

    58.2 PMD functional specifications.................................................................................................. 10158.2.1 PMD block diagram.......................................................................................................... 10258.2.2 PMD transmit function ..................................................................................................... 10258.2.3 PMD receive function ....................................................................................................... 10258.2.4 100BASE-LX10 and 100BASE-BX10 signal detect function ......................................... 103

    58.3 PMD to MDI optical specifications for 100BASE-LX10 ........................................................ 1034 Copyright 2012 IEEE. All rights reserved.

  • 58.3.1 Transmitter optical specifications ..................................................................................... 10358.3.2 Receiver optical specifications ......................................................................................... 104

    58.4 PMD to MDI optical specifications for 100BASE-BX10 ........................................................ 10558.4.1 Transmit optical specifications ......................................................................................... 10558.4.2 Receiver optical specifications ......................................................................................... 106

    58.5 Illustrative 100BASE-LX10 and 100BASE-BX10 channels and penalties (informative) ....... 10758.6 Jitter at TP1 and TP4 for 100BASE-LX10 and 100BASE-BX10 (informative)...................... 10858.7 Optical measurement requirements .......................................................................................... 108

    58.7.1 Test patterns ...................................................................................................................... 10958.7.1.1 100BASE-X optical frame-based test pattern......................................................... 109

    58.7.2 Wavelength and spectral width measurements ................................................................. 11158.7.3 Optical power measurements............................................................................................ 11158.7.4 Extinction ratio measurements.......................................................................................... 11158.7.5 Optical modulation amplitude (OMA) measurements (informative) ............................... 11258.7.6 OMA relationship to extinction ratio and power measurements (informative)................ 11258.7.7 Relative intensity noise optical modulation amplitude (RINxOMA) measuring

    procedure .......................................................................................................................... 11358.7.7.1 General test description .......................................................................................... 11358.7.7.2 Component descriptions ......................................................................................... 11358.7.7.3 Test procedure......................................................................................................... 114

    58.7.8 Transmitter optical waveform (transmit eye) ................................................................... 11558.7.9 Transmitter and dispersion penalty (TDP) measurement ................................................. 116

    58.7.9.1 Reference transmitter requirements ........................................................................ 11758.7.9.2 Channel requirements ............................................................................................. 11758.7.9.3 Reference receiver requirements ............................................................................ 11858.7.9.4 Test procedure......................................................................................................... 11858.7.9.5 Approximate measures of TDP (informative) ........................................................ 119

    58.7.10 Receiver sensitivity measurements ................................................................................... 12058.7.11 Stressed receiver conformance test................................................................................... 120

    58.7.11.1 Stressed receiver conformance test block diagram................................................. 12158.7.11.2 Stressed receiver conformance test signal characteristics and calibration ............. 12258.7.11.3 Stressed receiver conformance test procedure........................................................ 12458.7.11.4 Sinusoidal jitter for receiver conformance test ....................................................... 124

    58.7.12 Jitter measurements (informative) .................................................................................... 12558.8 Environmental, safety, and labeling ......................................................................................... 127

    58.8.1 General safety ................................................................................................................... 12758.8.2 Laser safety ....................................................................................................................... 12758.8.3 Installation ........................................................................................................................ 12758.8.4 Environment...................................................................................................................... 12758.8.5 PMD labeling requirements .............................................................................................. 127

    58.9 Characteristics of the fiber optic cabling .................................................................................. 12758.9.1 Fiber optic cabling model ................................................................................................. 12858.9.2 Optical fiber and cable ...................................................................................................... 12858.9.3 Optical fiber connection.................................................................................................... 12958.9.4 Medium Dependent Interface (MDI) ................................................................................ 129

    58.10 Protocol implementation conformance statement (PICS) proforma for Clause 58, Physical Medium Dependent (PMD) sublayer and medium, type 100BASE-LX10 (Long Wavelength) and 100BASE-BX10 (BiDirectional Long Wavelength).............................................................................................................................. 130

    58.10.1 Introduction....................................................................................................................... 13058.10.2 Identification ..................................................................................................................... 130

    58.10.2.1 Implementation identification ................................................................................ 13058.10.2.2 Protocol summary ................................................................................................... 13058.10.2.3 Major capabilities/options....................................................................................... 131Copyright 2012 IEEE. All rights reserved. 5

  • 58.10.3 PICS proforma tables for Physical Medium Dependent (PMD) sublayer and medium, type 100BASE-LX10 and 100BASE-BX10..................................................................... 131

    58.10.3.1 PMD functional specifications................................................................................ 13158.10.3.2 PMD to MDI optical specifications for 100BASE-LX10 ...................................... 13258.10.3.3 PMD to MDI optical specifications for 100BASE-BX10-D .................................. 13258.10.3.4 PMD to MDI optical specifications for 100BASE-BX10-U .................................. 13258.10.3.5 Optical measurement requirements ........................................................................ 13358.10.3.6 Environmental specifications.................................................................................. 13358.10.3.7 Characteristics of the fiber optic cabling and MDI................................................. 133

    59. Physical Medium Dependent (PMD) sublayer and medium, type 1000BASE-LX10 (Long Wavelength) and 1000BASE-BX10 (BiDirectional Long Wavelength)............................................ 135

    59.1 Overview................................................................................................................................... 13559.1.1 Goals and objectives ......................................................................................................... 13559.1.2 Positioning of 1000BASE-LX10 and 1000BASE-BX10 PMDs within the IEEE 802.3

    architecture........................................................................................................................ 13659.1.3 Terminology and conventions .......................................................................................... 13659.1.4 Physical Medium Dependent (PMD) sublayer service interface...................................... 13659.1.5 Delay constraints............................................................................................................... 137

    59.1.5.1 PMD_UNITDATA.request..................................................................................... 13759.1.5.2 PMD_UNITDATA.indication ................................................................................ 13759.1.5.3 PMD_SIGNAL.indication ...................................................................................... 137

    59.2 PMD functional specifications.................................................................................................. 13759.2.1 PMD block diagram.......................................................................................................... 13759.2.2 PMD transmit function ..................................................................................................... 13859.2.3 PMD receive function ....................................................................................................... 13859.2.4 PMD signal detect function .............................................................................................. 138

    59.3 PMD to MDI optical specifications for 1000BASE-LX10 ...................................................... 13959.3.1 Transmitter optical specifications ..................................................................................... 13959.3.2 Receiver optical specifications ......................................................................................... 139

    59.4 PMD to MDI optical specifications for 1000BASE-BX10-D and 1000BASE-BX10-U......... 14259.4.1 Transmit optical specifications ......................................................................................... 14259.4.2 Receiver optical specifications ......................................................................................... 143

    59.5 Illustrative 1000BASE-LX10 and 1000BASE-BX10 channels and penalties (informative) ... 14359.6 Jitter specifications ................................................................................................................... 14359.7 Optical measurement requirements .......................................................................................... 145

    59.7.1 Test patterns ...................................................................................................................... 14559.7.2 Wavelength and spectral width measurements ................................................................. 14859.7.3 Optical power measurements............................................................................................ 14959.7.4 Extinction ratio measurements.......................................................................................... 14959.7.5 OMA measurements (informative) ................................................................................... 14959.7.6 OMA relationship to extinction ratio and power measurements (informative)................ 14959.7.7 Relative intensity noise optical modulation amplitude (RIN12OMA)............................. 14959.7.8 Transmitter optical waveform (transmit eye) ................................................................... 14959.7.9 Transmit rise/fall characteristics ....................................................................................... 14959.7.10 Transmitter and dispersion penalty (TDP)........................................................................ 15059.7.11 Receive sensitivity measurements .................................................................................... 15059.7.12 Total jitter measurements (informative) ........................................................................... 15059.7.13 Deterministic or high probability jitter measurement (informative) ................................ 15159.7.14 Stressed receiver conformance test................................................................................... 15159.7.15 Measurement of the receiver 3 dB electrical upper cutoff frequency............................... 151

    59.8 Environmental, safety, and labeling specifications .................................................................. 15259.8.1 General safety ................................................................................................................... 1526 Copyright 2012 IEEE. All rights reserved.

  • 59.8.2 Laser safety ....................................................................................................................... 15259.8.3 Installation ........................................................................................................................ 15259.8.4 Environment...................................................................................................................... 15259.8.5 PMD labeling requirements .............................................................................................. 153

    59.9 Characteristics of the fiber optic cabling .................................................................................. 15359.9.1 Fiber optic cabling model ................................................................................................. 15359.9.2 Optical fiber and cable ...................................................................................................... 15359.9.3 Optical fiber connection.................................................................................................... 15559.9.4 Medium Dependent Interface (MDI) ................................................................................ 15559.9.5 Single-mode fiber offset-launch mode-conditioning patch cord for MMF operation of

    1000BASE-LX10.............................................................................................................. 15559.10 Protocol implementation conformance statement (PICS) proforma for Clause 59, Physical

    Medium Dependent (PMD) sublayer and medium, type 1000BASE-LX10 (Long Wavelength) and 1000BASE-BX10 (BiDirectional Long Wavelength).................................. 157

    59.10.1 Introduction....................................................................................................................... 15759.10.2 Identification ..................................................................................................................... 157

    59.10.2.1 Implementation identification................................................................................. 15759.10.2.2 Protocol summary ................................................................................................... 157

    59.10.3 Major capabilities/options................................................................................................. 15859.10.3.1 PMD functional specifications................................................................................ 15859.10.3.2 PMD to MDI optical specifications for 1000BASE-LX10 .................................... 15959.10.3.3 PMD to MDI optical specifications for 1000BASE-BX10-D ................................ 15959.10.3.4 PMD to MDI optical specifications for 1000BASE-BX10-U ................................ 15959.10.3.5 Optical Measurement requirements ........................................................................ 16059.10.3.6 Environmental, safety, and labeling specifications ................................................ 16059.10.3.7 Characteristics of the fiber optic cabling ................................................................ 16159.10.3.8 Offset-launch mode-conditioning patch cord ......................................................... 161

    60. Physical Medium Dependent (PMD) sublayer and medium, type 1000BASE-PX10 and 1000BASE-PX20 (long wavelength passive optical networks) ......................................................... 163

    60.1 Overview................................................................................................................................... 16360.1.1 Goals and objectives ......................................................................................................... 16460.1.2 Positioning of this PMD set within the IEEE 802.3 architecture ..................................... 16460.1.3 Terminology and conventions .......................................................................................... 16460.1.4 Physical Medium Dependent (PMD) sublayer service interface...................................... 16560.1.5 Delay constraints............................................................................................................... 165

    60.1.5.1 PMD_UNITDATA.request..................................................................................... 16560.1.5.2 PMD_UNITDATA.indication ................................................................................ 16560.1.5.3 PMD_SIGNAL.request........................................................................................... 16560.1.5.4 PMD_SIGNAL.indication ...................................................................................... 165

    60.2 PMD functional specifications.................................................................................................. 16660.2.1 PMD block diagram.......................................................................................................... 16660.2.2 PMD transmit function ..................................................................................................... 16760.2.3 PMD receive function ....................................................................................................... 16760.2.4 PMD signal detect function .............................................................................................. 167

    60.2.4.1 ONU PMD signal detect (downstream).................................................................. 16760.2.4.2 OLT PMD signal detect (upstream)........................................................................ 16760.2.4.3 1000BASE-PX Signal detect functions .................................................................. 167

    60.2.5 PMD transmit enable function for ONU........................................................................... 16860.3 PMD to MDI optical specifications for 1000BASE-PX10-D and

    1000BASE-PX10-U.................................................................................................................. 16860.3.1 Transmitter optical specifications ..................................................................................... 16860.3.2 Receiver optical specifications ......................................................................................... 170Copyright 2012 IEEE. All rights reserved. 7

  • 60.4 PMD to MDI optical specifications for 1000BASE-PX20-D and 1000BASE-PX20-U.................................................................................................................. 170

    60.4.1 Transmit optical specifications ......................................................................................... 17160.4.2 Receiver optical specifications ......................................................................................... 172

    60.5 Illustrative 1000BASE-PX10 and 1000BASE-PX20 channels and penalties (informative).... 17360.6 Jitter at TP1-4 for 1000BASE-PX10 and 1000BASE-PX20 (informative) ............................. 17460.7 Optical measurement requirements .......................................................................................... 176

    60.7.1 Frame-based test patterns.................................................................................................. 17660.7.2 Wavelength and spectral width measurements ................................................................. 17660.7.3 Optical power measurements............................................................................................ 17660.7.4 Extinction ratio measurements.......................................................................................... 17760.7.5 OMA measurements (informative) ................................................................................... 17760.7.6 OMA relationship to extinction ratio and power measurements (informative)................ 17760.7.7 Relative intensity noise optical modulation amplitude (RIN15OMA)............................. 17760.7.8 Transmitter optical waveform (transmit eye) ................................................................... 17760.7.9 Transmitter and dispersion penalty (TDP)........................................................................ 17860.7.10 Receive sensitivity measurement...................................................................................... 17860.7.11 Stressed receive conformance test .................................................................................... 17860.7.12 Jitter measurements (informative) .................................................................................... 17860.7.13 Other measurements ......................................................................................................... 178

    60.7.13.1 Laser On/Off timing measurement ......................................................................... 17860.7.13.1.1 Definitions .................................................................................................... 17860.7.13.1.2 Test specification .......................................................................................... 179

    60.7.13.2 Receiver settling timing measurement (informative) ............................................. 18060.7.13.2.1 Definitions .................................................................................................... 18060.7.13.2.2 Test specification .......................................................................................... 181

    60.8 Environmental, safety, and labeling ......................................................................................... 18260.8.1 General safety ................................................................................................................... 18260.8.2 Laser safety ....................................................................................................................... 18260.8.3 Installation ........................................................................................................................ 18260.8.4 Environment...................................................................................................................... 18260.8.5 PMD labeling requirements .............................................................................................. 182

    60.9 Characteristics of the fiber optic cabling .................................................................................. 18360.9.1 Fiber optic cabling model ................................................................................................. 18360.9.2 Optical fiber and cable ...................................................................................................... 18360.9.3 Optical fiber connection.................................................................................................... 18460.9.4 Medium Dependent Interface (MDI) ................................................................................ 184

    60.10 Protocol implementation conformance statement (PICS) proforma for Clause 60, Physical Medium Dependent (PMD) sublayer and medium, type 1000BASE-PX10 and 1000BASE-PX20 (long wavelength passive optical networks)................................................................... 185

    60.10.1 Introduction....................................................................................................................... 18560.10.2 Identification ..................................................................................................................... 185

    60.10.2.1 Implementation identification................................................................................. 18560.10.2.2 Protocol Summary .................................................................................................. 185

    60.10.3 Major capabilities/options................................................................................................. 18660.10.4 PICS proforma tables for Physical Medium Dependent (PMD) sublayer and medium,

    type 1000BASE-PX10 and 1000BASE-PX20 (long wavelength passive optical networks) .......................................................................................................................... 186

    60.10.4.1 PMD functional specifications................................................................................ 18660.10.4.2 PMD to MDI optical specifications for 1000BASE-PX10-D ................................ 18760.10.4.3 PMD to MDI optical specifications for 1000BASE-PX10-U ................................ 18760.10.4.4 PMD to MDI optical specifications for 1000BASE-PX20-D ................................ 18860.10.4.5 PMD to MDI optical specifications for 1000BASE-PX20-U ................................ 18960.10.4.6 Optical measurement requirements ........................................................................ 1898 Copyright 2012 IEEE. All rights reserved.

  • 60.10.4.7 Characteristics of the fiber optic cabling and MDI................................................. 19060.10.4.8 Environmental specifications.................................................................................. 190

    61. Physical Coding Sublayer (PCS), Transmission Convergence (TC) sublayer, and common specifications, type 10PASS-TS and type 2BASE-TL....................................................................... 191

    61.1 Overview .................................................................................................................................. 19161.1.1 Scope................................................................................................................................. 19161.1.2 Objectives ......................................................................................................................... 19261.1.3 Relation of 2BASE-TL and 10PASS-TS to other standards ............................................ 19261.1.4 Summary........................................................................................................................... 193

    61.1.4.1 Summary of Physical Coding Sublayer (PCS) specification.................................. 19361.1.4.1.1 Implementation of Media Independent Interface.......................................... 19461.1.4.1.2 Summary of MAC-PHY Rate Matching specification ................................. 19461.1.4.1.3 Summary of PME Aggregation specification............................................... 19461.1.4.1.4 Overview of management ............................................................................. 195

    61.1.4.2 Summary of Transmission Convergence (TC) specification.................................. 19561.1.4.3 Summary of handshaking and PHY control specification...................................... 195

    61.1.5 Application of 2BASE-TL, 10PASS-TS .......................................................................... 19561.1.5.1 Compatibility considerations .................................................................................. 19561.1.5.2 Incorporating the 2BASE-TL, 10PASS-TS PHY into a DTE ................................ 19561.1.5.3 Application and examples of PME Aggregation .................................................... 195

    61.1.5.3.1 Addressing PCS and PME instances ............................................................ 19661.1.5.3.2 Indicating PME aggregation capability ........................................................ 19661.1.5.3.3 Setting PME aggregation connection ........................................................... 198

    61.1.5.4 Support for handshaking......................................................................................... 19961.2 PCS functional specifications ................................................................................................... 200

    61.2.1 MAC-PHY Rate Matching functional specifications ....................................................... 20061.2.1.1 MAC-PHY Rate Matching functions ..................................................................... 20061.2.1.2 MAC-PHY Rate Matching functional interfaces.................................................... 200

    61.2.1.2.1 MAC-PHY Rate Matching MII signals ..................................................... 20061.2.1.2.2 MAC-PHY Rate MatchingManagement entity signals .............................. 200

    61.2.1.3 MAC-PHY Rate Matching state diagrams ............................................................. 20061.2.1.3.1 MAC-PHY Rate Matching state diagram constants ..................................... 20061.2.1.3.2 MAC-PHY Rate Matching state diagram variables ..................................... 20061.2.1.3.3 MAC-PHY Rate Matching state diagram timers .......................................... 20161.2.1.3.4 MAC-PHY Rate Matching state diagram functions ..................................... 20161.2.1.3.5 MAC-PHY Rate Matching state diagrams ................................................... 201

    61.2.2 PME Aggregation functional specifications ..................................................................... 20361.2.2.1 PAF Enable and Bypass.......................................................................................... 20461.2.2.2 PME Aggregation functions ................................................................................... 20461.2.2.3 PME Aggregation Transmit function ..................................................................... 20561.2.2.4 PME Aggregation Receive function ....................................................................... 205

    61.2.2.4.1 Expected sequence number........................................................................... 20561.2.2.4.2 PME Aggregation Receive function state diagram variables ....................... 20561.2.2.4.3 PME Aggregation Receive function state diagram....................................... 20661.2.2.4.4 PME Aggregation Receive function state diagram description.................... 206

    61.2.2.5 PME Aggregation restrictions ................................................................................ 20761.2.2.6 PME Aggregation transmit function restrictions .................................................... 20861.2.2.7 Error-detecting rules ............................................................................................... 209

    61.2.2.7.1 Errors during fragment reception.................................................................. 20961.2.2.7.2 Errors in fragment sequencing...................................................................... 21061.2.2.7.3 Errors in packet reassembly .......................................................................... 210

    61.2.2.8 PME aggregation functional interfaces................................................................... 210Copyright 2012 IEEE. All rights reserved. 9

  • 61.2.2.8.1 PME aggregationg-interface signals ........................................................... 21061.2.2.8.2 PME aggregationmanagement entity signals.............................................. 21061.2.2.8.3 PME aggregation register functions ............................................................. 21161.2.2.8.4 PME aggregation discovery register functions............................................. 212

    61.2.3 PCS sublayer: Management entity signals........................................................................ 21261.3 TC sublayer functional specifications....................................................................................... 214

    61.3.1 The g-interface .................................................................................................................. 21561.3.2 The a(b)-interface ............................................................................................................. 216

    61.3.2.1 a(b) data flow: reference G.993.1 section 7.1.1...................................................... 21661.3.2.2 a(b) synchronization flow ....................................................................................... 21661.3.2.3 a(b) OAM flow ....................................................................................................... 217

    61.3.3 TC functions ..................................................................................................................... 21761.3.3.1 TC encapsulation and coding.................................................................................. 21761.3.3.2 Sync insertion and transmit control ........................................................................ 22061.3.3.3 TC-CRC functions .................................................................................................. 22161.3.3.4 Bit ordering ............................................................................................................. 22261.3.3.5 Sync detection......................................................................................................... 224

    61.3.3.5.1 State diagram variables ................................................................................. 22561.3.3.5.2 State diagram ................................................................................................ 225

    61.3.3.6 Receive control ....................................................................................................... 22561.3.3.7 State diagrams for 64/65-octet encapsulation ......................................................... 226

    61.3.3.7.1 Transmit state diagram.................................................................................. 22661.3.3.7.2 Receive state diagram ................................................................................... 229

    61.3.3.8 TC sublayer management entity signals ................................................................. 23261.4 Handshaking and PHY control specification for type 2BASE-TL and 10PASS-TS ............... 232

    61.4.1 Overview........................................................................................................................... 23261.4.2 Replacement of 1, Scope............................................................................................... 232

    61.4.2.1 Scope....................................................................................................................... 23261.4.2.2 Purpose.................................................................................................................... 233

    61.4.3 Changes to 6.1, Description of signals .......................................................................... 23361.4.4 Changes to 9.4, Standard information field (S)............................................................. 23361.4.5 Changes to 9.5, Non-standard information field (NS) .................................................. 23461.4.6 Applicability of Annex AB and Appendix IVI............................................................. 23461.4.7 PME Aggregation remote access of PME Aggregation registers.................................. 234

    61.4.7.1 Remote_discovery_register .................................................................................... 23461.4.7.2 PME_Aggregate_register........................................................................................ 23661.4.7.3 Timing and preferred transactions .......................................................................... 237

    61.5 Link segment characteristics..................................................................................................... 23761.6 MDI specification ..................................................................................................................... 23861.7 System considerations............................................................................................................... 23861.8 Environmental specifications.................................................................................................... 23861.9 PHY labeling............................................................................................................................. 23861.10 Protocol implementation conformance statement (PICS) proforma for Clause 61, Physical

    Coding Sublayer (PCS), Transmission Convergence (TC) sublayer, and common specifications type 10PASS-TS, 2BASE-TL............................................................................ 239

    61.10.1 Introduction....................................................................................................................... 23961.10.2 Identification ..................................................................................................................... 239

    61.10.2.1 Implementation identification................................................................................. 23961.10.2.2 Protocol summary ................................................................................................... 239

    61.10.3 Major capabilities/options................................................................................................. 24061.10.4 PICS proforma tables for the Physical Coding Sublayer (PCS), Transmission

    Convergence (TC) sublayer, and common specifications type 10PASS-TS, 2BASE-TL...................................................................................................................................... 240

    61.10.4.1 MAC-PHY Rate Matching ..................................................................................... 24010 Copyright 2012 IEEE. All rights reserved.

  • 61.10.4.2 64/65-octet Encapsulation....................................................................................... 24161.10.4.3 PME Aggregation ................................................................................................... 24261.10.4.4 Handshaking ........................................................................................................... 248

    62. Physical Medium Attachment (PMA) and Physical Medium Dependent (PMD), type 10PASS-TS........................................................................................................................................................ 249

    62.1 Overview................................................................................................................................... 24962.1.1 Scope................................................................................................................................. 24962.1.2 Objectives ......................................................................................................................... 24962.1.3 Relation of 10PASS-TS to other standards....................................................................... 24962.1.4 Summary of Physical Medium Attachment (PMA) specification .................................... 249

    62.1.4.1 a(b)-interface........................................................................................................... 24962.1.4.2 I-interface................................................................................................................ 249

    62.1.4.2.1 I Data Flow ................................................................................................... 24962.1.4.2.2 I Synchronization Flow................................................................................. 250

    62.2 PMA functional specifications.................................................................................................. 25062.2.1 PMA functional diagram .................................................................................................. 25062.2.2 PMA functional specifications.......................................................................................... 25062.2.3 General exceptions............................................................................................................ 25162.2.4 Specific requirements and exceptions............................................................................... 252

    62.2.4.1 Replacement of 9.3.1, PMS-TC functional diagram........................................... 25262.2.4.2 Changes to 9.3.3, Forward error correction ........................................................ 25262.2.4.3 Changes to 9.3.5, Framing .................................................................................. 252

    62.3 PMD functional specifications.................................................................................................. 25262.3.1 PMD Overview ................................................................................................................. 25262.3.2 PMD functional specifications.......................................................................................... 25362.3.3 General exceptions............................................................................................................ 25362.3.4 Specific requirements and exceptions............................................................................... 254

    62.3.4.1 Replacement of 8.2.1, Multi-carrier Modulation ................................................ 25462.3.4.2 Changes to 8.2.2, Cyclic extension ..................................................................... 25562.3.4.3 Changes to 8.2.3, Synchronization...................................................................... 25562.3.4.4 Replacement of 8.2.4, Power back-off in the upstream direction ....................... 25562.3.4.5 Changes to 8.2.5, Constellation encoder ............................................................. 25662.3.4.6 Changes to 8.2.8, U-interface characteristics ...................................................... 25662.3.4.7 Changes to section 10, Operations and maintenance .......................................... 25762.3.4.8 Changes to 11.1, VDSL Link State and Timing Diagram .................................. 25862.3.4.9 Changes to section 18 (Annex 4), Handshake procedure for VDSL .................. 259

    62.3.4.9.1 Replacement of 18.1, Introduction............................................................ 25962.3.4.9.2 Replacement of 18.2, Description of signals............................................. 25962.3.4.9.3 Replacement of 18.3, Message coding format .......................................... 25962.3.4.9.4 Replacement of 18.4.1, Handshake - 10PASS-TS-O................................ 25962.3.4.9.5 Replacement of 18.4.2, Handshake - 10PASS-TS-R ................................ 261

    62.3.5 Transmission medium interface characteristics ................................................................ 26262.3.5.1 Transmit signal characteristics................................................................................ 263

    62.3.5.1.1 Wide-band power.......................................................................................... 26362.3.5.1.2 Power spectral density (PSD) ....................................................................... 26462.3.5.1.3 Egress control ............................................................................................... 264

    62.3.5.2 Termination impedance .......................................................................................... 26462.3.5.3 Return loss .............................................................................................................. 26462.3.5.4 Output signal balance.............................................................................................. 265

    62.4 Protocol implementation conformance statement (PICS) proforma for Clause 62, Physical Medium Attachment (PMA) and Physical Medium Dependent (PMD), type 10PASS-TS..... 266

    62.4.1 Introduction....................................................................................................................... 266Copyright 2012 IEEE. All rights reserved. 11

  • 62.4.2 Identification ..................................................................................................................... 26662.4.2.1 Implementation identification................................................................................. 26662.4.2.2 Protocol summary ................................................................................................... 266

    62.4.3 Major capabilities/options................................................................................................. 26762.4.4 PICS proforma tables for the Physical Medium Attachment (PMA) and Physical

    Medium Dependent (PMD), type 10PASS-TS................................................................. 26762.4.4.1 MCM-VDSL based PMA ....................................................................................... 26762.4.4.2 MCM-VDSL based PMD ....................................................................................... 268

    63. Physical Medium Attachment (PMA) and Physical Medium Dependent (PMD), type 2BASE-TL........................................................................................................................................................ 271

    63.1 2BASE-TL Overview ............................................................................................................... 27163.1.1 Scope................................................................................................................................. 27163.1.2 Objectives ......................................................................................................................... 27163.1.3 Relation of 2BASE-TL to other standards........................................................................ 27163.1.4 Summary of Physical Medium Attachment (PMA) specification .................................... 271

    63.1.4.1 a(b)-interface........................................................................................................... 27263.1.4.2 The I-interface......................................................................................................... 272

    63.1.4.2.1 The I Data Flow ............................................................................................ 27263.1.4.2.2 I Synchronization Flow................................................................................. 273

    63.1.4.3 Operation Channel (OC)......................................................................................... 27363.1.5 Summary of Physical Medium Dependent (PMD) specification ..................................... 273

    63.2 2BASE-TL PMA functional specifications .............................................................................. 27463.2.1 General exceptions............................................................................................................ 27463.2.2 Specific requirements and exceptions............................................................................... 274

    63.2.2.1 Changes to 7.1, Data Mode Operation ................................................................ 27563.2.2.2 Changes to Section 9, Management .................................................................... 27563.2.2.3 Relation between the 2BASE-TL registers and the SHDSL management

    functions.................................................................................................................. 27563.3 2BASE-TL PMD functional specifications .............................................................................. 276

    63.3.1 General exceptions............................................................................................................ 27663.3.2 Specific requirements and exceptions............................................................................... 277

    63.3.2.1 Replacement of section 5, Transport Capacity.................................................... 27763.3.2.2 Changes to section 6, PMD Layer Functional Characteristics............................ 27863.3.2.3 Changes to section 10, Clock Architecture ......................................................... 27963.3.2.4 Changes to Annex A, Regional RequirementsRegion 1 ................................. 279

    63.3.2.4.1 General Changes ........................................................................................... 27963.3.2.4.2 Additional requirement: wetting current....................................................... 279

    63.3.2.5 Changes to Annex B, Regional RequirementsRegion 2 ................................. 28063.3.2.5.1 General changes ............................................................................................ 28063.3.2.5.2 Additional requirement: wetting current....................................................... 280

    63.3.2.6 Changes to Annex C, Regional Requirements Region 3 ................................. 28063.4 Protocol implementation conformance statement (PICS) proforma for Clause 63, Physical

    Medium Attachment (PMA) and Physical Medium Dependent (PMD), type 2BASE-TL ...... 28163.4.1 Introduction....................................................................................................................... 28163.4.2 Identification ..................................................................................................................... 281

    63.4.2.1 Implementation identification................................................................................. 28163.4.2.2 Protocol summary ................................................................................................... 281

    63.4.3 Major capabilities/options................................................................................................. 28263.4.4 PICS proforma tables for the Physical Medium Attachment (PMA) and Physical

    Medium Dependent (PMD) sublayers, type 2BASE-TL.................................................. 28263.4.4.1 SHDSL based PMA ................................................................................................ 28263.4.4.2 SHDSL based PMD ................................................................................................ 28312 Copyright 2012 IEEE. All rights reserved.

  • 64. Multipoint MAC Control ................................................................................................................... 285

    64.1 Overview................................................................................................................................... 28564.1.1 Goals and objectives ......................................................................................................... 28664.1.2 Position of Multipoint MAC Control within the IEEE 802.3 hierarchy........................... 28664.1.3 Functional block diagram ................................................................................................. 28864.1.4 Service interfaces .............................................................................................................. 28964.1.5 State diagram conventions ................................................................................................ 289

    64.2 Multipoint MAC Control operation.......................................................................................... 28964.2.1 Principles of Multipoint MAC Control............................................................................. 290

    64.2.1.1 Ranging and Timing Process .................................................................................. 29164.2.2 Multipoint transmission control, Control Parser, and Control Multiplexer...................... 292

    64.2.2.1 Constants................................................................................................................. 29564.2.2.2 Counters .................................................................................................................. 29564.2.2.3 Variables ................................................................................................................. 29664.2.2.4 Functions................................................................................................................. 29764.2.2.5 Timers ..................................................................................................................... 29864.2.2.6 Messages ................................................................................................................. 29864.2.2.7 State Diagrams........................................................................................................ 298

    64.3 Multipoint Control Protocol (MPCP) ....................................................................................... 30464.3.1 Principles of Multipoint Control Protocol ........................................................................ 30464.3.2 Compatibility considerations ............................................................................................ 304

    64.3.2.1 PAUSE operation.................................................................................................... 30464.3.2.2 Optional Shared LAN Emulation ........................................................................... 30564.3.2.3 Multicast and single copy broadcast support .......................................................... 30564.3.2.4 Delay requirements ................................................................................................. 305

    64.3.3 Discovery Processing........................................................................................................ 30564.3.3.1 Constants................................................................................................................. 30964.3.3.2 Variables ................................................................................................................. 30964.3.3.3 Functions................................................................................................................. 31064.3.3.4 Timers ..................................................................................................................... 31064.3.3.5 Messages ................................................................................................................. 31064.3.3.6 State Diagram ......................................................................................................... 313

    64.3.4 Report Processing ............................................................................................................. 31864.3.4.1 Constants................................................................................................................. 31864.3.4.2 Variables ................................................................................................................. 31864.3.4.3 Functions................................................................................................................. 31964.3.4.4 Timers ..................................................................................................................... 31964.3.4.5 Messages ................................................................................................................. 31964.3.4.6 State Diagram ......................................................................................................... 320

    64.3.5 Gate Processing................................................................................................................. 32264.3.5.1 Constants................................................................................................................. 32264.3.5.2 Variables ................................................................................................................. 32364.3.5.3 Functions................................................................................................................. 32464.3.5.4 Timers ..................................................................................................................... 32564.3.5.5 Messages ................................................................................................................. 32564.3.5.6 State Diagrams........................................................................................................ 327

    64.3.6 MPCPDU structure and encoding..................................................................................... 33064.3.6.1 GATE description ................................................................................................... 33164.3.6.2 REPORT description .............................................................................................. 33364.3.6.3 .REGISTER_REQ description................................................................................ 33464.3.6.4 REGISTER description........................................................................................... 33664.3.6.5 REGISTER_ACK description ................................................................................ 337Copyright 2012 IEEE. All rights reserved. 13

  • 64.4 Protocol implementation conformance statement (PICS) proforma for Clause 64, Multipoint MAC Control .......................................................................................................... 339

    64.4.1 Introduction....................................................................................................................... 33964.4.2 Identification ..................................................................................................................... 339

    64.4.2.1 Implementation identification................................................................................ 33964.4.2.2 Protocol summary .................................................................................................. 339

    64.4.3 Major capabilities/options ................................................................................................ 34064.4.4 PICS proforma tables for Multipoint MAC Control......................................................... 340

    64.4.4.1 Compatibility Considerations ................................................................................. 34064.4.4.2 Multipoint MAC Control ........................................................................................ 34064.4.4.3 State diagrams......................................................................................................... 34164.4.4.4 MPCP...................................................................................................................... 342

    65. Extensions of the Reconciliation Sublayer (RS) and Physical Coding Sublayer (PCS) / Physical Media Attachment (PMA) for 1000BASE-X for multipoint links and forward error correction....... 343

    65.1 Extensions of the Reconciliation Sublayer (RS) for point-to-point emulation......................... 34365.1.1 Overview........................................................................................................................... 34365.1.2 Principle of operation........................................................................................................ 34365.1.3 Functional specifications .................................................................................................. 344

    65.1.3.1 Variables ................................................................................................................. 34465.1.3.2 Transmit .................................................................................................................. 344

    65.1.3.2.1 SLD............................................................................................................... 34565.1.3.2.2 LLID ............................................................................................................. 34565.1.3.2.3 CRC-8 ........................................................................................................... 345

    65.1.3.3 Receive function ..................................................................................................... 34565.1.3.3.1 SLD............................................................................................................... 34665.1.3.3.2 LLID ............................................................................................................. 34665.1.3.3.3 CRC-8 ........................................................................................................... 347

    65.2 Extensions of the physical coding sublayer for data detection and forward error correction .................................................................................................................................. 347

    65.2.1 Overview........................................................................................................................... 34765.2.2 Burst-mode operation ....................................................................................................... 348

    65.2.2.1 Principle of operation.............................................................................................. 34865.2.2.2 Detailed functions and state diagrams .................................................................... 350

    65.2.2.2.1 Variables ....................................................................................................... 35065.2.2.2.2 Functions....................................................................................................... 35165.2.2.2.3 Messages ....................................................................................................... 35165.2.2.2.4 Counters ........................................................................................................ 351

    65.2.2.3 State Diagrams........................................................................................................ 35265.2.3 Forward error correction ................................................................................................... 352

    65.2.3.1 FEC code................................................................................................................. 35365.2.3.2 FEC frame format ................................................................................................... 353

    65.2.3.2.1 Placing parity octets...................................................................................... 35365.2.3.2.2 Shortened last block...................................................................................... 35365.2.3.2.3 Special frame markers .................................................................................. 353

    65.2.3.3 FEC sublayer operation .......................................................................................... 35465.2.3.3.1 Principles of operation .................................................................................. 35465.2.3.3.2 Functional block diagram ............................................................................. 35565.2.3.3.3 Transmission................................................................................................. 35565.2.3.3.4 Reception ...................................................................................................... 356

    65.2.3.4 Detailed functions and state diagrams .................................................................... 35765.2.3.4.1 State variables ............................................................................................... 35765.2.3.4.2 Notation conventions .................................................................................... 35714 Copyright 2012 IEEE. All rights reserved.

  • 65.2.3.4.3 Constants....................................................................................................... 35765.2.3.4.4 Variables ....................................................................................................... 35865.2.3.4.5 Functions....................................................................................................... 36065.2.3.4.6 Counters ........................................................................................................ 36165.2.3.4.7 Messages ....................................................................................................... 361

    65.2.3.5 State diagrams......................................................................................................... 36165.2.3.5.1 Transmit state diagram.................................................................................. 36165.2.3.5.2 Receive synchronization state diagram......................................................... 36365.2.3.5.3 Receive state diagram ................................................................................... 364

    65