CONTENTS

 1     Scope
 2     References
 3     Abbreviations
 4     Definitions
 5     Architecture and requirements for a protected optical access network
        5.1     Architecture and requirements
                  5.1.1     Service categories
                  5.1.2     Background and requirements
        5.2     Reference configuration
        5.3     Functional blocks
        5.4     ONU functional block
                  5.4.1     Optical Distribution Network (ODN) interface
                  5.4.2     Multiplexing
                  5.4.3     User Port
                  5.4.4     ONU Powering
                  5.4.5     ODN interface switch
        5.5     OLT functional block
        5.6     Optical Distribution Network (ODN) functional block
                  5.6.1     Passive optical elements
                  5.6.2     Optical interfaces
 6     Services
 7     User Network Interface and Service Node Interface
 8     Optical network survivability requirements
        8.1     Layer structure of the B-PON survivability optical network
        8.2     Physical medium dependent layer requirements for B-PON
        8.3     Additional TC-layer requirements for B-PON survivability
                  8.3.1     Duplex PON link identification
                  8.3.2     Additional messages in the PLOAM channel for survivability
                  8.3.3     Message formats
        8.4     Ranging Method
        8.5     Protection switching
                  8.5.1     PON Protection function
                  8.5.2     Protocols
                  8.5.3     Switching criteria
                  8.5.4     Performance
 9     Operations Administration and Maintenance (OAM) functionality
10     Performance
11     Environmental condition
12     Safety
Annex A - Fast switching protocol for the B-PON access network
        A.1     Survivability Architecture
                  A.1.1     1:1 architecture (required)
                  A.1.2     1+1 Architecture (optional)
        A.2     MSP bytes
                  A.2.1     K1 byte
                  A.2.2     K1 byte generation rules
                  A.2.3     Revertive/non-revertive modes
                  A.2.4     K2 byte
                  A.2.5     Control of the upstream switch in the ONU and the downstream switch in the OLT
                  A.2.6     Transmission and acceptance of MSP Bytes
        A.3     MSP commands
        A.4     Switching Sequence
                  A.4.1     1:1 bidirectional operation with non-revertive mode
                  A.4.2     1:1 bidirectional operation with revertive mode
                  A.4.3     1+1 bidirectional operation with non-revertive mode
                  A.4.4     1+1 bidirectional operation with revertive mode