• ITU-T RECOMMENDATION I.122 (1988)
  • 1 Introduction
    • 1.1 Scope
    • 1.2 Objectives
    • 1.3 Definitions of terms
  • 2 Service aspects
    • 2.1 General service characteristics
    • 2.2 Quality of Service parameters
    • 2.3 Individual bearer service descriptions
  • 3 User-network interface protocol reference model
    • 3.1 Core functions of Rec. I.441
    • 3.2 Other user terminal functions
    • 3.3 Network functions
    • 3.4 Further service requirements at the user-network interface
    • 3.5 Potential bearer services
  • 4 Interworking requirements
    • 4.1 Interworking between packet mode services
    • 4.2 Support of existing terminals
    • 4.3 Interworking with circuit mode services
  • 5 Support of OSI connection-oriented network layer service
  • 6 Applications
  • ANNEX A - Further service-related information
  • A.1 Introduction
  • A.2 Service related information
  • ANNEX B - General arrangement for interworking between an ISDN where I.122 bearer services are requested...
  • B.1 Possible scenarios
  • B.2 IWF logically belonging to ISDN (Recommendation I.122)
  • B.3 IWF logically belonging to the PSPDN (Recommendation X.25)/ISDN (Recommendation X.31)
  • ANNEX C - Support of network layer service (X.213) in an ISDN offering additional packet mode bearer services
  • C.2 C-plane enhancements
  • C.3 U-plane enhancements
  • ANNEX D - Congestion control in frame relaying service
  • D.1 General objectives of congestion control
  • D.2 User reaction to network congestion
  • D.3 Control action by the network congestion