An open architecture for next-generation telecommunication services
ACM Transactions on Internet Technology (TOIT)
ECharts for SIP servlets: a state-machine programming environment for VoIP applications
Proceedings of the 1st international conference on Principles, systems and applications of IP telecommunications
Spin model checker, the: primer and reference manual
Spin model checker, the: primer and reference manual
Compositional Control of IP Media
IEEE Transactions on Software Engineering
Experience with component-based development of a telecommunication service
CBSE'05 Proceedings of the 8th international conference on Component-Based Software Engineering
StratoSIP: SIP at a very high level: demo proposal for IPTComm 2011
IPTcomm '11 Proceedings of the 5th International Conference on Principles, Systems and Applications of IP Telecommunications
Mid-call, multi-party, and multi-device telecommunication features and their interactions
IPTcomm '11 Proceedings of the 5th International Conference on Principles, Systems and Applications of IP Telecommunications
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Third-party call control (3PCC) is essential to implementing advanced services in Voice-over-IP (VoIP) networks. It allows intermediary applications to control how the media streams of endpoint devices are connected together. However the Session Initiation Protocol (SIP), the widely adopted open standard for VoIP signaling, presents a number of challenges that make 3PCC in SIP complex and prone to errors. Previously proposed solutions only address operations under ideal conditions and thus are incomplete. Furthermore, the problem of compositional 3PCC by multiple applications has not been addressed. In this paper, we propose a general solution for robust and comprehensive media connectivity control. The solution has been verified, and allows multiple applications operating concurrently in a call path to interoperate successfully.