1. Internet Real-Time Laboratory demonstration
Internet telephony, ubiquitous computing and ad-hoc networking
Prof. Henning Schulzrinne

2. SIP-based architecture
Telephone
7040
SIP/PSTN Gateway
Department
PBX
switch
713x
rtspd
sipum
Quicktime
RTSP clients
RTSP
sipconf
Configuration
Web server
SQL
database
sipd
7134,wenyu
Xiaotaow
7135, sank
NetMeeting
siph323
H.323

3. Heterogeneous conference
Telephone
Dial
IP phone
IP “soft” phone
sipconf
Dial
…enter 3 digit PIN…
…enter conference id…

4. Messaging and device control
Audio, video, IM, white board, screen sharing, shared browsing
DO SIP/2.0
…..
<Control>
<Action>turn lamp on</Action>
</Control>
Internet

5. Ubiquitous computing
enter the room… use I-button or swipe card
sipd

6. 7DS Peer-to-Peer Architecture

7. 7DS Interface

8. 7DS scenario PDA Scoped Multicast Group 7DS Client Laptop
Queries 7DS network for object
Laptop
Collaborating laptop
PDA
Enters Campus with wanted object
Queries the multicast group before going to Internet

9. Summary SIP-based architecture Peer to peer ad-hoc networking
Heterogeneous endpoints
Telephone, SIP phone, H.323, Devices like lamp, video encoder
Advanced services
Programmable call routing, voice mail, interactive voice response
Multimedia collaboration: Real-time (conference, IM) or offline (discussion board, voic , file sharing)
Peer to peer ad-hoc networking
Data dissemination
Message Passing applications