1 Scope
2 Normative references
    2.1 Identical Recommendations/International
          Standards
    2.2 Paired Recommendations/International Standards
          equivalent in technical contents
3 Definitions
    3.1 This Recommendation/International Standard is
          based on the concepts developed in ITU-T Rec.X.200
          ISO/IEC 7498-1 and makes use of the following
          terms defined in it
    3.2 For the purposes of this Recommendation/International
          Standard, the following definitions apply
    3.3 This Recommendation/International Standard uses
          the following terms defined in ITU-T Rec.X.290
          and ISO/IEC 9646-1
    3.4 This Recommendation/International Standard uses the
          following terms defined in ITU-T Rec.X.210/ISO/IEC
          10731
4 Symbols and abbreviations
    4.1 Data units
    4.2 NPDU types
    4.3 NPDU fields
    4.4 Miscellaneous
5 Overview of the Network Fast Byte Protocol
    5.1 Service provided by the Network Layer
    5.2 Service assumed from the Data Layer
    5.3 Functions of the Network Layer
    5.4 Operation over CODLS
    5.5 Model of the Network Layer
6 Network Fast Byte Protocol Specification
    6.1 Network Protocol Data Unit (NPDU) transfer
    6.2 Connection establishment
    6.3 Connection refusal
    6.4 Normal release
    6.5 Error Indication
    6.6 Abnormal release
    6.7 Data transfer
    6.8 Segmenting and reassembling
    6.9 Qualifier-bit
    6.10 Invalid NPDU
    6.11 NS-user initiated reset
7 FB-NPDU Structure and encoding
    7.1 Header part
    7.2 Control part
    7.3 Data part
8 Conformance
Annex A Protocol Implementation Conformance Statement
          (PICS) proforma
    A.1 General
    A.2 Identification
    A.3 Indices used in this annex
    A.4 Initiator/responder capability to establish
          connection
    A.5 Supported functions
    A.6 Supported NPDUs
    A.7 Supported FB NPDU fields and parameters
    A.8 Negotiation and selection
    A.9 Error handling
Annex B Subnetwork Dependent Convergence Function for
          subnetworks employing out-of-band signalling
    B.1 Applicable subnetworks
    B.2 Fast Byte Protocol specification