Presence Architecture and Flow Diagrams

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Presence Architecture and FlowDiagrams

• Date-1st Nov 2005

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Presence

• Cross domain (wireless, PSTN, VoIP as presence
  sources)
• Cross federation (multiple administrative
  domains)
• Interaction of different components ( PA, UA,
  XCAP Server, Resource List Server)
• Basic presence block diagram
• Presence server data processing
• Presence data management of user having
  identities in multiple domains.

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Cross-domain presence
SIP NOTIFY
SIP SUBSCRIBE
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Inter-domain presence Cross federation
external-domain.com
SUBSCRIBE NOTIFY
SUBSCRIBE NOTIFY
SIP Proxy Server
Presence Agent pa.columbia.edu
Presence Agent pa.cs.columbia.edu
PUBLISH
Presence Agent pa.campus1.columbia.edu
PUBLISH
PUBLISH
Logical sub-domain cs.columbia.edu
Branch Office I
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Interaction between different presence protocols
Buddy List Update, Policy Update, Authorization.
Presentity
Watcher
XCAP Server
PUBLISH presence
NOTIFY presence
Auth Policy, Resource List
SUBSCRIBE presence
SUBSCRIBE Watcher-Info
Presence Agent (resource-list, composition,
Filtering etc.
NOTIFY Watcher-Info
SUBSCRIBE reg
NOTIFY reg
REGISTER
SIP Proxy/ Registrar
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Basic block diagram
PUBLISH
presence agent
Presentity
SUBSCRIBE
Watcher
NOTIFY
NOTIFY
NOTIFY
SIP Proxy/ Registrar
REGISTER
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Presence server data processing
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Presence data management for a user having
identities in multiple domain