BS EN 50221:1997

1 Introduction and scope
2 Definitions
4 Design philosophy
    4.1 Layering
    4.2 Physical implementation
    4.3 Client-server
    4.4 Coding of data
    4.5 Extensibility
    4.6 Incorporation of existing standards
5 Description and architecture
    5.1 Overview
    5.2 Transport Stream Interface
    5.3 Command Interface
    5.4 Physical requirements
    5.5 Operational example
6 Transport Stream Interface (TSI)
    6.1 TSI - physical, link layers
    6.2 TSI- transport layer
    6.3 TSI - upper layers
7 Command interface - Transport & Session Layers
    7.1 Generic Transport Layer
    7.2 Session layer
8 Command interface - Application layer
    8.1 Introduction
    8.2 Resources
    8.3 Application protocol data units
    8.4 System management resources
    8.5 Hose control and information resources
    8.6 Man-machine interface resource
    8.7 Communications resources
    8.8 Resource identifiers and application object
          tags
Annex A: PC Card based physical layer (normative)
    A.1 General description
    A.2 Electrical interface
    A.3 Link layer
    A.4 Implementation-specific Transport sublayer over
          PC Card Interface
    A.5 PC Card subset to be used by conformant
          Hosts and Modules
Annex B: Additional objects (informative)
    B.1 Authentication
    B.2 EBU Teletext Display Resource
    B.3 Smart Card Reader Resource Class
    B.4 DVB EPG Future Event Support Class

Specifies only those aspects of the host required to define completely the interactions across the interface. Does not specify the operation or functionality of a conditional access system application on the module. Applications performed by a module communicating across the interface are not limited to conditional access or to those in the specification. More than one module may be supported at the same time.