R. Avp, denotes RTP used under the RTP Profile for Audio and Video Conferences with Minimal Control running over UDP

R. Savp, denotes the Secure Real-time Transport Protocol running over UDP. <fmt> is a media format description. Bibliography [1] " Webrtc 1.0: Real-time communication between browsers, 2011.

R. Von-behren, J. Condit, and E. Brewer, Why events are a bad idea (for high-concurrency servers), Proceedings of the 9th conference on Hot Topics in Operating Systems, pp.4-4, 2003.

T. O. Reilly and J. Battelle, web squared: Web 2.0 five years on

R. Guha, Toward the Intelligent Web Systems, 2009 First International Conference on Computational Intelligence, Communication Systems and Networks, pp.459-463, 2009.
DOI : 10.1109/CICSYN.2009.25

. Alcatel-lucent, Immersive communications

J. Rosenberg, H. Schulzrinne, G. Camarillo, A. Johnston, J. Peterson et al., Sip: Session initiation protocol, IETF RFC, vol.3261, 2002.
DOI : 10.17487/rfc3261

W. Chou, L. Li, and F. Liu, WIP: Web Service Initiation Protocol for Multimedia and Voice Communication over IP, 2006 IEEE International Conference on Web Services (ICWS'06), pp.515-522, 2006.
DOI : 10.1109/ICWS.2006.146

M. J. Arif, S. Karunasekera, and S. Kulkarni, SOVoIP, Proceedings of the 8th ACM/IFIP/USENIX international conference on Middleware , Middleware '07, pp.1-23, 2007.
DOI : 10.1145/1377943.1377961

M. Boussard, P. Jabaud, O. Le-berre, F. Poussiere, P. Labrogere et al., Communication hyperlinks: Call me my way Rtp: A transport protocol for real-time applications, Intelligence in Next Generation Networks 13th International Conference on, pp.1-5, 2009.

M. Handley, V. Jacobson, and C. Perkins, Sdp: Session description protocol, IETF RFC, vol.4566, 2006.
DOI : 10.17487/rfc4566

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.180.9170

J. Rosenberg, J. Peterson, H. Schulzrinne, and G. Camarillo, Parlay x 3.0 specifications Best current practices for third party call control (3pcc) in the session initiation protocol (sip), IETF RFC, vol.3725, 2004.

R. M. Arlein, D. R. Dams, R. B. Hull, J. Letourneau, and K. S. Namjoshi, Telco meets the Web: Programming shared-experience services, Bell Labs Technical Journal, vol.14, issue.3, pp.167-185, 2009.
DOI : 10.1002/bltj.20395

E. Cheung and P. Zave, Principles, systems and applications of ip telecommunications. services and security for next generation networks , " ch. Generalized Third-Party Call Control in SIP Networks, pp.45-68, 2008.

H. Jiang, A. Iyengar, E. Nahum, W. Segmuller, A. Tantawi et al., Load Balancing for SIP Server Clusters, IEEE INFOCOM 2009, The 28th Conference on Computer Communications, pp.2286-2294, 2009.
DOI : 10.1109/INFCOM.2009.5062154

V. Hilt and I. Widjaja, Controlling overload in networks of SIP servers, 2008 IEEE International Conference on Network Protocols, pp.83-93, 2008.
DOI : 10.1109/ICNP.2008.4697027

J. Rosenberg, The session initiation protocol (sip) update method, IETF RFC, vol.3311, 2002.
DOI : 10.17487/rfc3311

J. Rosenberg and H. Schulzrinne, Reliability of provisional responses in the session initiation protocol (sip), IETF RFC, vol.3262, 2002.
DOI : 10.17487/rfc3262

A. B. Roach, Session initiation protocol (sip)-specific event notification, IETF RFC, vol.3265, 2002.

A. Niemi, Session initiation protocol (sip) extension for event state publication, IETF RFC, vol.3903, 2002.
DOI : 10.17487/rfc3903

R. Sparks, The session initiation protocol (sip) refer method, IETF RFC, vol.3515, 2003.
DOI : 10.17487/rfc3515

J. Rosenberg, H. Schulzrinne, C. Huitema, and D. Gurle, Session initiation protocol (sip) extension for instant messaging, IETF RFC, vol.3428

C. Holmberg, E. Burger, and H. Kaplan, Session initiation protocol (sip) info method and package framework, IETF RFC, vol.6086, 2011.
DOI : 10.17487/rfc6086

N. Banerjee and K. Dasgupta, Telecom mashups, Proceedings of the 2nd international conference on Ubiquitous information management and communication , ICUIMC '08, pp.146-150, 2008.
DOI : 10.1145/1352793.1352824

D. Lozano, L. Galindo, and L. Garcia, WIMS 2.0: Converging IMS and Web 2.0. Designing REST APIs for the Exposure of Session-Based IMS Capabilities, 2008 The Second International Conference on Next Generation Mobile Applications, Services, and Technologies, pp.18-24, 2008.
DOI : 10.1109/NGMAST.2008.97

J. Rosenberg, J. Lennox, and H. Schulzrinne, Programming Internet telephony services, IEEE Network, vol.13, issue.3, pp.42-49, 1999.
DOI : 10.1109/65.767138

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.106.9983

L. Burgy, C. Consel, F. Latry, J. Lawall, N. Palix et al., Language Technology for Internet-Telephony Service Creation, 2006 IEEE International Conference on Communications, pp.1795-1800, 2006.
DOI : 10.1109/ICC.2006.254980

URL : https://hal.archives-ouvertes.fr/inria-00196518

X. Wu and H. Schulzrinne, Programmable end system services using sip, ICC '03. IEEE International Conference on, pp.789-793, 2003.

W. Jouve, N. Palix, C. Consel, and P. Kadionik, Principles, systems and applications of ip telecommunications. services and security for next generation networks, " ch. A SIP-Based Programming Framework for Advanced Telephony Applications, pp.1-20, 2008.

F. Latry, J. Mercadal, and C. Consel, Staging telephony service creation, Proceedings of the 1st international conference on Principles, systems and applications of IP telecommunications, IPTComm '07, pp.99-110, 2007.
DOI : 10.1145/1326304.1326319

URL : https://hal.archives-ouvertes.fr/inria-00353534

P. Zave, Principles, systems and applications of ip telecommunications . services and security for next generation networks, ch. Understanding SIP through Model-Checking, pp.256-279, 2008.

J. Peterson, C. Jennings, and S. R. , Change process for the session initiation protocol (sip) and the real-time applications and infrastructure area, Modularity in distributed feature composition Software Requirements and Design: The Work of, 2009.
DOI : 10.17487/rfc5727

M. Jackson and P. Zave, Distributed feature composition: a virtual architecture for telecommunications services, IEEE Transactions on Software Engineering, vol.24, issue.10, pp.831-847, 1998.
DOI : 10.1109/32.729683

M. Kolberg and E. H. , Managing feature interactions between distributed SIP call control services, Computer Networks, vol.51, issue.2, pp.536-557, 2007.
DOI : 10.1016/j.comnet.2006.08.006

X. Wu, J. Buford, K. Dhara, V. Krishnaswamy, and M. Kolberg, Feature interactions between internet services and telecommunication services, Proceedings of the 3rd International Conference on Principles, Systems and Applications of IP Telecommunications, IPTComm '09, pp.1-1012, 2009.
DOI : 10.1145/1595637.1595651

P. Zave, Mid-call, multi-party, and multi-device telecommunication features and their interactions, Proceedings of the 5th International Conference on Principles, Systems and Applications of IP Telecommunications, IPTcomm '11, 2011.
DOI : 10.1145/2124436.2124459

H. Schulzrinne, Personal mobility for multimedia services in the Internet, Proceedings of the European Workshop on Interactive Distributed Multimedia Systems and Services, pp.143-161, 1996.
DOI : 10.1007/3-540-60938-5_11

J. A. Tuijn and D. Bijwaard, Spanning a multimedia session across multiple devices, Bell Labs Technical Journal, vol.12, issue.4, pp.179-193, 2008.
DOI : 10.1002/bltj.20275

T. Wang and K. Chiu, An Efficient Scheme for Supporting Personal Mobility in SIP-Based VoIP Services, IEICE Transactions on Communications, vol.89, issue.10, pp.2706-2714, 2006.
DOI : 10.1093/ietcom/e89-b.10.2706

T. Wang and H. Lee, User location management for personal mobility in sip-based voip services, Communications and Networking in China Third International Conference on, pp.910-914, 2008.

P. Chang and T. Wang, Supporting Personal Mobility with Integrated RFID in VoIP Systems, 2009 International Conference on New Trends in Information and Service Science, pp.1353-1359, 2009.
DOI : 10.1109/NISS.2009.278

B. Moltchanov, M. Knappmeyer, C. Licciardi, and N. Baker, Context-aware content sharing and casting, 12th ICIN, 2008.

M. Barachi, A. Kadiwal, R. Glitho, F. Khendek, and R. Dssouli, The design and implementation of architectural components for the integration of the IP multimedia subsystem and wireless sensor networks, IEEE Communications Magazine, vol.48, issue.4, pp.42-50, 2010.
DOI : 10.1109/MCOM.2010.5439075

C. Jacob, H. Pfeffer, D. Linner, S. Steglich, L. Yan et al., Automatic routing of semantic SIP messages in IMS, 2008 2nd International Conference on Internet Multimedia Services Architecture and Applications, pp.1-6, 2008.
DOI : 10.1109/IMSAA.2008.4753908

T. Tang, Z. Mi, and R. Peng, Adaptive Service Provisioning through Context-Aware SIP Proxy, Fourth International Conference on Networking and Services (icns 2008), pp.277-281, 2008.
DOI : 10.1109/ICNS.2008.39

J. Rosenberg, Obtaining and using globally routable user agent uris (gruus) in the session initiation protocol (sip), IETF RFC, vol.5627, 2009.
DOI : 10.17487/rfc5627

V. A. Balasubramaniyan, A. Acharya, M. Ahamad, M. Srivatsa, I. Dacosta et al., SERvartuka: Dynamic Distribution of State to Improve SIP Server Scalability, 2008 The 28th International Conference on Distributed Computing Systems, pp.562-572, 2008.
DOI : 10.1109/ICDCS.2008.42

R. Shacham, H. Schulzrinne, S. Thakolsri, and W. Kellerer, Session initiation protocol (sip) session mobility, IETF RFC, vol.5631, 2009.
DOI : 10.17487/rfc5631

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.642.4442

S. Shanmugalingam, N. Crespi, and P. Labrogere, My Own Communication Service Provider, International Congress on Ultra Modern Telecommunications and Control Systems, pp.260-266, 2010.
DOI : 10.1109/ICUMT.2010.5676628

URL : https://hal.archives-ouvertes.fr/hal-01308993

P. Zave and E. Cheung, Compositional control of ip media, Proceedings of the 2006 ACM CoNEXT conference, pp.1-1812, 2006.

R. Shacham, H. Schulzrinne, S. Thakolsri, and W. Kellerer, The virtual device: expanding wireless communication services through service discovery and session mobility, WiMob'2005), IEEE International Conference on Wireless And Mobile Computing, Networking And Communications, 2005., pp.22-24, 2005.
DOI : 10.1109/WIMOB.2005.1512952

M. Hasebe, J. Koshiko, Y. Suzuki, T. Yoshikawa, and P. Kyzivat, Example call flows of race conditions in the session initiation protocol (sip), IETF RFC, vol.5407, 2008.
DOI : 10.17487/rfc5407

M. Chen, C. Peng, and R. Hwang, SSIP: Split a SIP session over multiple devices, Computer Standards & Interfaces, vol.29, issue.5, pp.531-545, 2007.
DOI : 10.1016/j.csi.2006.11.008

M. Chen and F. Wang, Session integration service over multiple devices, International Journal of Communication Systems, vol.38, issue.10, pp.673-690, 2010.
DOI : 10.1002/dac.1109

R. Sparks, The session initiation protocol (sip) referred-by mechanism, IETF RFC, vol.389268, 2004.
DOI : 10.17487/rfc3892

A. Vilei, G. Convertino, and F. Crudo, A new UPnP architecture for distributed video voice over IP, Proceedings of the 4th international conference on Mobile and ubiquitous multimedia , MUM '06, 2006.
DOI : 10.1145/1186655.1186657

J. Dean and A. B. Bondi, Challenges in building large-scale information retrieval systems, Proceedings of the Second ACM International Conference on Web Search and Data Mining, WSDM '09, pp.1-100, 2000.
DOI : 10.1145/1498759.1498761

J. Y. Kim, G. W. Bond, E. Cheung, T. M. Smith, and H. Schulzrinne, An evaluation framework for highly available and scalable SIP server clusters, Proceedings of the 5th International Conference on Principles, Systems and Applications of IP Telecommunications, IPTcomm '11, pp.1-110, 2011.
DOI : 10.1145/2124436.2124438

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.229.1950

K. Ono and H. Schulzrinne, Principles, systems and applications of ip telecommunications. services and security for next generation networks, " ch. One Server Per City: Using TCP for Very Large SIP Servers, pp.133-148, 2008.

G. Kambourakis, D. Geneiatakis, T. Dagiuklas, C. Lambrinoudakis, and S. Gritzalis, Towards effective sip load balancing: the snocer approach, 3rd Annual VoIP Security Workshop, 2006.

Y. Hong, C. Huang, and J. Yan, Modeling and simulation of SIP tandem server with finite buffer, ACM Transactions on Modeling and Computer Simulation, vol.21, issue.2, pp.1-1127, 2011.
DOI : 10.1145/1899396.1899399

C. Shen and H. Schulzrinne, On TCP-based SIP server overload control, Principles, Systems and Applications of IP Telecommunications on, IPTComm '10, pp.71-83, 2010.
DOI : 10.1145/1941530.1941541

A. Dutta, C. Makaya, S. Das, D. Chee, J. Lin et al., Self organizing IP Multimedia Subsystem, 2009 IEEE International Conference on Internet Multimedia Services Architecture and Applications (IMSAA), pp.118-123, 2009.
DOI : 10.1109/IMSAA.2009.5439473

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.221.1308

J. Zou, W. Xue, Z. Liang, Y. Zhao, B. Yang et al., SIP Parsing Offload: Design and Performance, IEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference, pp.2774-2779, 2007.
DOI : 10.1109/GLOCOM.2007.525

J. Janak, Sip proxy server effectiveness, 2003.

A. Alexander, A. Wijesinha, and R. Karne, A Study of Bare PC SIP Server Performance, 2010 Fifth International Conference on Systems and Networks Communications, pp.392-397, 2010.
DOI : 10.1109/ICSNC.2010.68

Z. Jia, Z. Liang, and Y. Dai, Scalability Evaluation and Optimization of Multi-Core SIP Proxy Server, 2008 37th International Conference on Parallel Processing, pp.43-50, 2008.
DOI : 10.1109/ICPP.2008.30

J. Maenpaa and G. Camarillo, Analysis of Delays in a Peer-to-Peer Session Initiation Protocol Overlay Network, 2010 7th IEEE Consumer Communications and Networking Conference, pp.7-8, 2010.
DOI : 10.1109/CCNC.2010.5421852

C. Cheng, S. Tsao, and J. Chou, Unstructured peer-topeer session initiation protocol for mobile environment, Personal , Indoor and Mobile Radio Communications PIMRC 2007. IEEE 18th International Symposium on, pp.1-5, 2007.

I. Stoica, R. Morris, D. Karger, M. F. Kaashoek, and H. Balakrishnan, Chord: A scalable peer-to-peer lookup service for internet applications, Proceedings of the 2001 conference on Applications, technologies, architectures, and protocols for computer communications , SIGCOMM '01, pp.149-160, 2001.

S. Ratnasamy, P. Francis, M. Handley, R. Karp, and S. Shenker, A scalable content-addressable network, Proceedings of the 2001 conference on Applications, technologies, architectures, and protocols for computer communications, SIGCOMM '01, pp.161-172, 2001.

A. Rowstron and P. Druschel, Pastry: Scalable, Decentralized Object Location, and Routing for Large-Scale Peer-to-Peer Systems, IFIP/ACM International Conference on Distributed Systems Platforms (Middleware), pp.329-350, 2001.
DOI : 10.1007/3-540-45518-3_18

K. Singh and H. Schulzrinn, Peer-to-peer internet telephony using SIP, Proceedings of the international workshop on Network and operating systems support for digital audio and video , NOSSDAV '05, 2004.
DOI : 10.1145/1065983.1065999

P. Saint-andre, Streaming XML with Jabber/XMPP, IEEE Internet Computing, vol.9, issue.5, pp.82-89, 2005.
DOI : 10.1109/MIC.2005.110

M. Podgoreanu, P. Chitescu, and P. Saint-andre, Xep-0251: Jingle session transfer, 2009.

S. Arbanowski, S. Van-der-meer, S. Steglich, and R. Popescu-zeletin, The Human Communication Space: Towards I-centric Communications, Personal and Ubiquitous Computing, vol.5, issue.1, pp.34-37, 2001.
DOI : 10.1007/s007790170026

S. Arbanowski, P. Ballon, K. David, O. Droegehorn, H. Eertink et al., I-centric communications: personalization, ambient awareness, and adaptability for future mobile services, IEEE Communications Magazine, vol.42, issue.9, pp.63-69, 2004.
DOI : 10.1109/MCOM.2004.1336722

R. Fielding, J. Gettys, J. Mogul, H. Frystyk, L. Masinter et al., Hypertext transfer protocol ? http/1.1 [98] I. Fette and A. Melnikov The web socket protocol, RFC 2616, 1999.

R. Copeland, Network Intelligence - facilitate operators win in mobile broadband era, 2009 13th International Conference on Intelligence in Next Generation Networks, pp.1-6, 2009.
DOI : 10.1109/ICIN.2009.5357062

G. W. Bond, T. M. Smith, P. Cheung, and . Zave, Specification and evaluation of transparent behavior for SIP back-to-back user agents, Principles, Systems and Applications of IP Telecommunications on, IPTComm '10, pp.48-58, 2010.
DOI : 10.1145/1941530.1941538

E. Cheung and T. Smith, Getting SIP endpoints and network call control to work well together, Proceedings of the 5th International Conference on Principles, Systems and Applications of IP Telecommunications, IPTcomm '11, 2011.
DOI : 10.1145/2124436.2124460

C. A. Moltchano, M. Knappmeye, and N. Baker, Context-aware content sharing and casting, 2008.

A. Al-hezmi, T. Magedanz, J. Pallares, and C. A. Riede, Evolving the Convergence of Telecommunication and TV Services over NGN, International Journal of Digital Multimedia Broadcasting, p.11, 2008.
DOI : 10.1155/2008/843270

P. Mockapetris, Domain names -concepts and facilities, IETF RFC, vol.1034, 1987.
DOI : 10.17487/rfc1034

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.420.1013

P. Mockapetris, Domain names?implementation and specification, IETF RFC, vol.1035, 1987.
DOI : 10.17487/rfc1035

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.375.9285

J. Jung, E. Sit, H. Balakrishnan, and R. Morris, DNS performance and the effectiveness of caching, IEEE/ACM Transactions on Networking, vol.10, issue.5, pp.589-603, 2002.
DOI : 10.1109/TNET.2002.803905

R. Cox, A. Muthitacharoen, and R. Morris, Serving DNS Using a Peer-to-Peer Lookup Service, Revised Papers from the First International Workshop on Peer-to-Peer Systems, IPTPS '01, pp.155-165, 2002.
DOI : 10.1007/3-540-45748-8_15

C. Maccarthaigh, Scaling httpd 2.x to 50,000 concurrent downloads, In ApacheCOn EU, 2006.

. Redhat, Specweb2005 benchmark using red hat enterprise linux 5.2 on a hp proliant dl580 g5, 2009.

S. Foley and W. Macadams, Trust management of XMPP federation, 12th IFIP/IEEE International Symposium on Integrated Network Management (IM 2011) and Workshops, pp.1192-1195, 2011.
DOI : 10.1109/INM.2011.5990581

R. Sparks, A. Johnston, and D. Petrie, Session initiation protocol (sip) call control -transfer, IETF RFC5589, 2009.
DOI : 10.17487/rfc5589

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.182.7062

A. C. Snoeren and H. Balakrishnan, An end-to-end approach to host mobility, Proceedings of the 6th annual international conference on Mobile computing and networking , MobiCom '00, pp.155-166, 2000.
DOI : 10.1145/345910.345938

P. Westin, H. Lundin, M. Glover, J. Uberti, and F. Galligan, Proposal for the ietf on "rtp payload format for vp8 video" draft-westin-payload-vp8-02

J. Rosenberg and H. Schulzrinne, An offer/answer model with the session description protocol (sdp), IETF RFC, vol.3264, 2002.
DOI : 10.17487/rfc3264

E. M. Nahum, J. Tracey, and C. P. Wright, Evaluating SIP server performance, Proceedings of the 3rd ACM/IEEE Symposium on Architecture for networking and communications systems, pp.349-35007, 2007.
DOI : 10.1145/1269899.1254924

S. Soltesz, H. Pötzl, M. E. Fiuczynski, A. Bavier, and L. Peterson, Container-based operating system virtualization: a scalable, highperformance alternative to hypervisors, Proceedings of the 2nd ACM SIGOPS/EuroSys European Conference on Computer Systems, pp.275-287, 2007.

M. Burnett, C. Cook, and G. , End-user software engineering, Communications of the ACM, vol.47, issue.9, pp.53-58, 2004.
DOI : 10.1145/1015864.1015889

URL : https://hal.archives-ouvertes.fr/hal-01405092

L. Huang, E. Chen, A. Barth, E. Rescorla, and C. Jackson, Talking to yourself for fun and profit, Proceedings of W2SP, 2011.