• CCITT Rec. X.300 (11/1988) – GENERAL PRINCIPLES FOR INTERWORKING BETWEEN PUBLIC NETWORKS, AND BETWEEN PUBLIC NETWORKS AND OTHER NETWORKS FOR THE PROVISION OF DATA TRANSMISION SERVICES
  • CONTENTS
  • 0 Introduction
  • 1 Scope and field of application
  • 2 References
  • 3 Definitions
    • 3.1 Terminology defined in other Recommendations
    • 3.2 Terminology defined in this Recommendation
    • 3.3 Graphical conventions
  • 4 Abbreviations
  • 5 Networks to be interconnected, and data transmission services to be offered
    • 5.1 Packet switched public data network (PSPDN)
    • 5.2 Circuit switched public data network (CSPDN)
    • 5.3 Integrated services digital network (ISDN)
    • 5.4 Public switched telephone network (PSTN)
    • 5.5 Common channel signalling network (CCSN)
    • 5.6 Public Mobile systems
    • 5.7 Private Networks
  • 6 Principles for interworking involving transmission capabilities only
    • 6.1 Composition and decomposition of subnetworks
    • 6.2 Categories of interworking
    • 6.3 Categorization of subnetworks with respect to the support of the OSI NS
    • 6.4 Relationships with respect to management
    • 6.5 Basic principles in relation with service indication parameters
  • 7 Principles interworking involving both transmission and communication capability
    • 7.1 Composition and decomposition of application relay systems
    • 7.2 Categories of interworking
    • 7.3 Identification of application relay system types
    • 7.4 Relation between application IWF, networks and application relay system types
    • 7.5 Interconnection of application relay system types
    • 7.6 Use of application relay system types
    • 7.7 Relationships with respect to management
    • 7.8 Relationships with the Reference Model of OSI for CCITT applications
    • 7.9 Basic principles in relation with service indication parameters
  • 8 Description of the different interworking conditions
    • 8.1 General
    • 8.2 Interworking via a non-OSI adapter between PSTN and PSPDN
    • 8.3 Interworking involving ISDN for the provision of data transmission services
  • ANNEX A – Basic categories of subnetworks
  • A.1 Type I subnetwork
  • A.2 Type II subnetwork
  • A.3 Type III subnetwork
  • A.4 Type IV subnetwork
  • ANNEX B – Examples of subnetwork compositions
  • B.1 Examples of Type I and Type II interconnection
  • B.2 Type I – Type III interconnetion
  • B.3 Type II – Type III interconnection
  • B.4 Type IV – Type I interconnection