Internet Real-Time Internet Real-Time Laboratory Laboratory demonstrationdemonstration

Prof. Henning Schulzrinnehgs@cs.columbia.edu

http://www.cs.columbia.edu/IRT

Multimedia collaborationMultimedia collaboration

sipconf

…enter 3 digit PIN……enter conference id…

Dial 212-9397139

Dial staffmeet@cs.columbia.edu

IP phone

IP “soft” phone

Telephone

Messaging and device Messaging and device controlcontrol

Internet

DO sip:lamp@cs.columbia.edu SIP/2.0…..<Control><Action>turn lamp on</Action></Control>

Voicemail

Call decision Tree (CPL scripts)

PUBLISH

uploadWilliam’s call

Others’ call

Programmable Call Programmable Call RoutingRouting

Service CreationService Creation<?xml version="1.0"?><cpl> <incoming> <time-switch> <time dtstart="20031117T160000Z" duration="PT1H"> <address-switch field="origin"> <address is="sip:hgs@columbia.edu"> <alert ringstyle=“urgent"> <accept> <string-switch field="subject"> <string is="lunch"> <location url="sip:hz@columbia.edu"> <call/> </location> </string> </string-switch> </accept> </alert> ……

Example projectsExample projects Location-based services: i-button, badge Voice and video mail Email access and notification by phone Emergency 911 call routing File sharing among conference participants Integrating IP telephony with virtual games UDP-based link simulator Wireless ad-hoc networks . . .