Embed Size (px)
DESCRIPTION
Motivation More powerful endpoints Phone is a computer Add context awareness to the call setup Provide rejected callers with rich feedback How to implement in SIP MATA05 Norwegian University of Technology and Science Department of Telematics
Citation preview
“A presence based multimedia call screening service”
Egil C. Østhus, now with TANDBERGLill Kristiansen, Dept of Telematics, NTNU
Outline Motivation PreMuMex – The architecture Advantages Challenges Future work
MATA05Norwegian University of Technology and ScienceDepartment of Telematics
Motivation More powerful endpoints
Phone is a computer Add context awareness to the call
setup Provide rejected callers with rich
feedback How to implement in SIP
MATA05Norwegian University of Technology and ScienceDepartment of Telematics
PreMuMex – The architecture
MATA05Norwegian University of Technology and ScienceDepartment of Telematics
PreMuMex – The architecture
MATA05Norwegian University of Technology and ScienceDepartment of Telematics
PreMuMex – The architecture
MATA05Norwegian University of Technology and ScienceDepartment of Telematics
PreMuMex – The architecture
MATA05Norwegian University of Technology and ScienceDepartment of Telematics
PreMuMex – The architecture
MATA05Norwegian University of Technology and ScienceDepartment of Telematics
PreMuMex – The architecture
MATA05Norwegian University of Technology and ScienceDepartment of Telematics
PreMuMex – The architecture
MATA05Norwegian University of Technology and ScienceDepartment of Telematics
Advantages Intelligent policy based call screening is
possible Calendar data System status Personal presence Could be extended with other parameters
Dynamic failure response More info than the POTS “unavailable tone” Different response to different callers Response could include Click-to-dial or similar technologies
MATA05Norwegian University of Technology and ScienceDepartment of Telematics
Challenges Support of REFER
SIP extension, not mandatory to support Accessing the collaboration data
Control unit and collaboration server likely to be in different business domains
A trust relationship is needed between the calendar data provider and the sip proxy provider
MATA05Norwegian University of Technology and ScienceDepartment of Telematics
Future work New security issues is introduced
Potential DoS attacks Should be studied in greater detail
Privacy issues To what extend does the average Joe
what to reveal his context information?
MATA05Norwegian University of Technology and ScienceDepartment of Telematics
