CONTENTS

1 General
1.1 Scope
1.2 General considerations
1.2.1 Service definitions
1.2.2 Network Transport of Identities
1.2.3 Interactions
1.2.4 References
1.3 Definitions and terminology
2 Summary Service Definitions
2.1 UPT specific supplementary services
2.2 UPT modification of ISDN service Recommendations
2.3 Definitions of supplementary services adopted from the I-series Recommendations
3 Description of interactions of supplementary services in the UPT environment and line owner's supplementary services
3.1 Call Waiting (CW) Interactions between line owner's and UPT user's supplementary services
3.2 Call Forwarding Busy (CFB) Interactions between line owner's and UPT user's supplementary services
3.3 Calling Line Identification Presentation/Calling Line Identification Restriction (CLIP/CLIR) Interactions between line owner's and UPT user's supplementary services
3.4 Connected Line Identification Presentation/Connected Line Identification Restriction (COLP/COLR) Interactions between line owner's and UPT user's supplementary services
3.5 Completion of Calls to Busy Subscriber (CCBS) Interactions between line owner's and UPT user's supplementary services
3.6 Multi-Level Precedence and Pre-emption (MLPP) Interactions between line owner's and UPT user's supplementary services
3.7 Explicit Call Transfer (ECT) Interactions between line owner's and UPT user's supplementary services
3.8 Interaction between supplementary services in the UPT environment