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Real-time Mantra >
IMS Call Flows > IMS Presence
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IP Multimedia Subsystem (IMS) provides a
framework and building blocks for building advanced telecom services. One
such service is network wide publication and subscription of presence
information. Users can subscribe to presence information for their contacts.
If the contact accepts their request, the subscriber will be registered for
presence notification. Whenever the friend publishes presence information,
the IMS presence framework will notify the subscribed users.
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The diagrams in this page were generated with
EventStudio System Designer 4.0. |
The call flow is explained below by focusing on a different aspects of IMS presence publication and notification framework.
Overview |
The following diagram provides an overview of the message interactions. Interaction details and remarks are
omitted from the diagram. IMS
Presence Overview
pdfIMS
Presence Collaboration Diagram
pdf |
High Level Summary |
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The following flow diagram diagrams look at
the presence subscription and notification at a high level.High
Level Flow - UE and Presence Proxy Level Interactions
pdfHigh
Level Flow - UE and IMS Network Level Interactions
pdf |
User Equipment (UE) Role |
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Presence Server Role |
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