1. 1 Draft RTC Architecture From “Next Steps for Internet2 Real Time Communications” http://www.internet2.edu/pubs/rtc-next-steps.pdf

2. 2 The Slide…

3. 3 Draft RTC Architecture high-performance, end-to-end IP transit BobAlice User Campus UserInternet2/GigaPoP/ASP Campus Host Network-Layer Connectivity Applications APIs Codecs APIs Codecs Signaling Connective Middleware Call Filtering Auth N/Z Call Filtering Auth N/Z Identity Presence Call Routing Identity Presence Call Routing Damping Middleware Rich Presence Services Calendaring Location... Calendaring Location Directories Signaling Campus-to-Campus Trust / Policy / Encryption P2P media and Trust / Policy / Encryption...or... Auxiliary Services Gatewaying Bridging Messaging... Gatewaying Bridging Messaging... Gatewaying Bridging Messaging...

4. 4 The Executive Summary…

5. 5 Scaling Advanced Real-Time Communications Bob Alice User Campus / Enterprise UserWANs/MANs/LANs Campus / Enterprise Host Network-Layer Connectivity high-performance, end-to-end IP transit High-performance, end-to-end IP connectivity is necessary, but not sufficient to connect Alice with Bob ?!!?

6. 6 Bob Alice Bob Today: 3 rd Party ASPs Provide the Missing Middleware User Campus / Enterprise UserWANs/MANs/LANs Campus / Enterprise Host Network-Layer Connectivity Applications 3 rd Party ASPs Skype high-performance, end-to-end IP transit FWDYahoo!… ? Communications is Balkanized by competing 3 rd parties, who are unable to provide strong authentication, identity management, or rich presence for their users ? Bob Blank email: bob@bigu.edu Skype: bob2_bigu.edu FWD: 654321 Yahoo!: bobb26 BU

7. 7 Alice Bob Alice User Campus / Enterprise UserWANs/MANs/LANs Campus / Enterprise Host Network-Layer Connectivity Applications Campus Middleware high-performance, end-to-end IP transit Identity management, authentication, call routing, and rich presence are best implemented and scaled by campus / enterprise middleware Connective Middleware Bob Blank bob@bigu.edu BU Moderating Middleware Presence Campus / Enterprise Middleware

8. 8 Market Maker Role Bob Alice User Campus / Enterprise UserWANs/MANs/LANs Campus / Enterprise Host Network-Layer Connectivity Applications Identity Management, Call Routing, Authentication, Presence...or... Auxiliary Services Bridging, Gatewaying, Messaging, … Identity Management, Call Routing, Authentication, Presence Campus Middleware Bridging, Gatewaying, Messaging, … Bridging, Gatewaying, Messaging, … high-performance, end-to-end IP transit Open campus / enterprise SIP communications creates a communications commons, creating vast new markets ASPs Hard / Soft Client Vendors Proxies, Directories, Feature Servers…