Cgu demo

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Cgu demo

  1. 1. Directory Enabled SIP Video Conferencing Client Dr. Samir Chatterjee Network Convergence Laboratory School of Information Science Claremont Graduate University Claremont, CA 91711 909-607-4651; sip:samir.chatterjee@cgu.edu
  2. 2. Acknowledgments <ul><li>Network Convergence Lab at CGU </li></ul><ul><ul><li>Bengisu Tulu, Tarun Abhichandani, Haiqing Li, Jongbok Byun </li></ul></ul><ul><li>National Science Foundation Grant ( NMI Proposal 0222710) </li></ul><ul><li>Internet2 and ViDe Net Folks </li></ul><ul><ul><li>Jill Gemmill (UAB, Birmingham) </li></ul></ul><ul><ul><li>Tyler Johnson (UNC, Chapel Hill) </li></ul></ul><ul><ul><li>Egon Verharen (SURFNET) </li></ul></ul><ul><ul><li>Ken Klingenstein (Internet2) </li></ul></ul><ul><ul><li>Dynamicsoft Inc (SIP partner) </li></ul></ul>
  3. 3. SIP (The IETF Standard) <ul><li>Session Initiation Protocol is a signaling standard from IETF for real-time multimedia (voice, video, instant messages) session establishment. </li></ul><ul><li>Sessions can be voice, video or instant messaging and is described by SDP. </li></ul><ul><li>Basic components: </li></ul><ul><ul><li>User Agent (UA): works on behalf of users to set up calls </li></ul></ul><ul><ul><li>Proxy Servers (PS): keeps track of location of end-points </li></ul></ul><ul><ul><li>Registrar: Each UA registers to inform current location and preferred reachability information </li></ul></ul><ul><li>SIP has provisions for authentication (digest) and end-to-end security (using S/MIME). </li></ul>
  4. 4. CGU SIP Client <ul><li>This is a free client available from http://ncl.cgu.edu/sipclient/index.php </li></ul><ul><li>Key features include </li></ul><ul><ul><li>Supports several audio codecs (G.723, GSM, DVI, mlaw) </li></ul></ul><ul><ul><li>Supports standard video codecs (H.261, H.263, JPEG) </li></ul></ul><ul><ul><li>Full H.350 directory services compliant </li></ul></ul><ul><ul><li>Java client with click to call functionality </li></ul></ul><ul><ul><li>Provides authentication using digest with MD5 hashing </li></ul></ul><ul><ul><li>New version has enterprise directory login and SSO </li></ul></ul><ul><li>Tested with other SIP clients for interoperability </li></ul>
  5. 5. CGUsipClientv1.1 Architecture JMF Utils Client.GUI Client.SIP Client.Media Dynamicsoft Initiation Libraries Dynamicsoft Media Libraries Client
  6. 6. User Registration Process http:// ncl . cgu . edu / sipclient /index. php
  7. 7. <ul><li>Part 1 </li></ul><ul><ul><li>Liha (in Indy) calls Tulub (in Claremont) </li></ul></ul><ul><ul><ul><li>Audio connection established </li></ul></ul></ul><ul><ul><ul><li>Video connection established (resizable) </li></ul></ul></ul><ul><ul><li>Tulub calls Liha </li></ul></ul><ul><ul><ul><li>CallerID explained </li></ul></ul></ul><ul><ul><li>H.350 directory display and click to call </li></ul></ul><ul><ul><li>Redirect services </li></ul></ul><ul><ul><ul><li>Tulub calls Liha </li></ul></ul></ul><ul><ul><ul><li>Liha receives and redirects call to Samir’s SIP client </li></ul></ul></ul><ul><ul><ul><li>Redirect to a web page </li></ul></ul></ul>CGUsipClientv1.1 Demo
  8. 8. Demo – Part 2 <ul><li>An ED stores all commObjects related to its domain users. </li></ul><ul><li>CGU SIP Client will SSO to ED </li></ul><ul><li>It will obtain all SIPIdentity information from ED </li></ul><ul><li>It will provide user with a drop down list of SIP URIs </li></ul><ul><li>Obtain necessary password and create authenticated session with proxy </li></ul>
  9. 9. ED Authentication
  10. 10. Future Directions <ul><li>Improve client and its performance with a SIP based MCU to provide conferencing sessions. </li></ul><ul><li>Adding presence and instant messaging capability </li></ul><ul><li>Provide end-to-end security with S/MIME functionality </li></ul><ul><li>Explore federated security models </li></ul><ul><ul><li>Role-based authorization using OpenSAML </li></ul></ul><ul><ul><li>Experimenting with digital certs (KX.509) </li></ul></ul>

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