Table of Contents

Foreword
1 General
  1.1 Scope
  1.2 Application to interface structures
2 Overview of call control
  2.1 Circuit switched calls
  2.2 Packet mode access connections
  2.3 Temporary signalling connections
  2.4 States associated with the global call
      reference
3 Message functional definitions and content
  3.1 Messages for circuit mode connection control
  3.2 Messages for packet mode connection control
  3.3 Messages for user to user signalling not
      associated with circuit switched calls
  3.4 Messages used with the global call reference
4 General message format and information elements
  coding
  4.1 Overview
  4.2 Protocol discriminator
  4.3 Call reference
  4.4 Message type
  4.5 Other information elements
  4.6 Supplementary services information elements
  4.7 Information elements for packet communications
5 Circuit switched call control procedures
  5.1 Call establishment at the originating interface
  5.2 Call establishment at the destination interface
  5.3 Call clearing
  5.4 In-band tones and announcements
  5.5 Restart procedure
  5.6 Call rearrangements
  5.7 Call collisions
  5.8 Handling of error conditions
  5.9 User notification procedure
6 Packet communication procedures
7 User-to-user signalling procedures
  7.1 Procedures for user-to-user signalling associated
      with circuit-switched calls
  7.2 Procedures for user-to-user signaling not
      associated with circuit-switched calls
8 Application of circuit-switched supplementary
  services to terminals using stimulus procedures
9 List of system parameters
  9.1 Timers in the Network Side
  9.2 Timers in the User side
Annex A (Informative): User side and network side
                       SDL diagrams
Annex B (Normative): Compatibility checking
  B.1 Introduction
  B.2 Calling side compatibility checking
  B.3 Called side compatibility checking
  B.4 Interworking with existing networks
Annex C (Normative): Transit network selection
  C.1 Selection not supported
  C.2 Selection supported
Annex D (Informative): Extension for symmetric call
                       operation
  D.1 Additional message handling
  D.2 Timers for call establishment
  D.3 Call collisions
Annex E (Normative): Network specific facility
                     selection
  E.1 Default provider
  E.2 Routing not supported
  E.3 Routing supported
Annex F (Informative): D-Channel backup procedures
Annex G (Informative): Cause definitions
  G.1 Normal class
  G.2 Resource unavailable class
  G.3 Service or option not available class
  G.4 Service or option not implemented class
  G.5 Invalid message (e.g. parameter out of range)
      class
  G.6 Protocol error (e.g. unknown message)
      class
  G.7 Interworking class
Annex H (Informative): Examples of information elements
                       coding
  H.1 Bearer capability information element
  H.2 Channel identification information element
  H.3 Called/calling party subaddress information
      element
Annex I (Normative): Use of progress indicators
Annex J (Normative): Examples of cause value and
                     location for busy condition
Annex K (Normative): Message segmentation procedures
  K.1 Introduction
  K.2 Message segmentation
  K.3 Reassembly of segmented messages
Annex L (Normative): Low layer information coding
                     principles
  L.1 Purpose
  L.2 Principle
  L.3 Information classification
  L.4 Scenarios outside the scope of ISDN
      standardization
Annex M (Normative): Low layer compatibility
                     negotiation
  M.1 General
  M.2 Low layer capability notification to the called
      user
  M.3 Low layer capability negotiation between users
  M.4 Low layer compatibility negotiation options
Annex N (Normative): Procedures for establishment of
                     bearer connection prior to call
                     acceptance
  N.1 General
  N.2 Procedures
Annex O (Informative): Optional procedures for bearer
                       service change
Annex P (Informative): Formal Definitions for the
                       Facility information element
Appendix I (Informative): (to ETS 300 102-1): Usage of
                          cause values
Appendix II (Informative): (to ETS 300 102-1): Example
                           message flow diagrams and
                           example conditions for cause
                           mapping
Appendix III (Informative): (to ETS 300 102-1): Summary
                            of assigned information
                            element identifier and
                            message type code points
                            for the T/S 46-XX series of identifier and message type
                            ETSs
History

Abstract

Specifies the generic layer three protocol for the control of circuit switched on demand connections serving ISDN customers via the user network interface for a variety of applications. Presents the generic layer three signalling requirements for the user network interfaces. Specifies the protocol requirements where the service is given to the user within an ISDN, but does not specify the additional protocol requirements where the service is given to the user via a telecommunication network that is not an ISDN.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	SPS 5