CONTENTS

 1     Scope
 2     References
 3     Definitions
        3.1     External definitions
        3.2     Additional definitions
 4     Abbreviations
 5     Description
        5.1     Overview
        5.2     Protocol model for prenegotiation
 6     Operational requirements
 7     Primitive definitions and state definitions
        7.1     Service primitives
        7.2     Prenegotiation states
                  7.2.1     PRN Idle
                  7.2.2     PRN Initiated
                  7.2.3     PRN Delivered
                  7.2.4     PRN Present
                  7.2.5     PRN Received
 8     Coding requirements
        8.1     Abstract definition of the prenegotiation operations
 9     Prenegotiation procedures
        9.1     General
        9.2     Procedures at an originating or terminating CC entity
                  9.2.1     Invoking the prenegotiation operation by the initiating CC entity
                  9.2.2     Responding to the prenegotiation invocation
                  9.2.3     Completion of prenegotiation
                  9.2.4     Error handling
                  9.2.5     Crossing of bearer establishment messages with prenegotiation-related APDUs
        9.3     Procedures at a transit CC entity
10     Interactions
11     Interworking with networks not supporting prenegotiation
       11.1     Calls from other networks to a network supporting prenegotiation
       11.2     Calls to other networks not supporting prenegotiation
12     SDL diagrams
Appendix I - Information flow diagrams
        I.1     Prenegotiation
        I.2     Prenegotiation with optional prenegotiation-Alert
Appendix II - Object identifiers defined in this Recommendation