1
Scope
2 References
3 Terms and definitions
4 Abbreviations and acronyms
5
Introduction
6
SS-MWI service description
6.1 Description
6.2 Normal procedures
6.2.1 Activation, deactivation and interrogation
6.2.2 Invocation and operation
6.3 Exceptional procedures
6.3.1 Activation, deactivation and interrogation
6.3.2 Invocation and operation
7 Signalling protocol for the support of SS-MWI
7.1 SS-MWI coding requirements
7.1.1 H.450.1 Supplementary Service APDU
7.1.2 Operations
7.2 SS-MWI state definitions
7.2.1 States at the Message Centre endpoint
7.2.2 States at the Served User
7.3 Timers
7.3.1 Timer T1
7.3.2 Timer T2
7.4 SS-MWI Signalling procedures
7.4.1
Activation/deactivation
7.4.2 Interrogation
7.4.3 Primitives
7.5 Gatekeeper interactions
7.6 Interactions between SS-MWI and
other supplementary services
7.6.1 Interaction with Call Forwarding (SS-CFU, SS-CFNR, SS-CFB)
7.6.2 Interaction with Call Transfer (SS-CT)
7.6.3 Interaction with Call Hold (SS-HOLD)
7.6.4 Interaction with Call Park (SS-PARK) and Call Pickup (SS-PICKUP)
7.6.5 Interaction with Call Waiting (SS-CW)
7.7 SS-MWI security considerations 8 Signalling flows for SS-MWI
8.1 Example Message Sequence for
SS-MWI activation
8.2 Example Message Sequence for SS-MWI deactivation
8.3 Example Message Sequence for
SS-MWI interrogation
9 Specification and Description
Language (SDL) diagrams
9.1 SDL Representation of SS-MWI at
the Message Centre endpoint
9.2 SDL Representation of SS-MWI at
the Served User