| Título: | Open Service Access to SIP Conferencing |
| Autores: |
Atanasov, Ivaylo; Technical University of Sofia, 8, “Kliment Ohridsky” blvd, 1000 Sofia, Bulgaria Koleva, Pavlina; Technical University of Sofia, 8, “Kliment Ohridsky” blvd, 1000 Sofia, Bulgaria Pencheva, Evelina; Technical University of Sofia, 8, “Kliment Ohridsky” blvd, 1000 Sofia, Bulgaria |
| Fecha: | 2008-07-25 |
| Publicador: | African Journal Of Information & Communication Technology |
| Fuente: |
 |
| Tipo: |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| Tema: | conferencing, Open Service Access, Session Initiation Protocol |
| Descripción: | The call control protocol for use in the IP Multimedia core network subsystem in next generation networks is based on the Session Initiation Protocol (SIP), and the associated Session Description Protocol (SDP). The protocol supports the initiation, modification, and termination of conference sessions between user agents. Open service access (OSA) defines service architecture with open interfaces to network functions. The paper presents a research on implementing of OSA application control in SIP conferencing. The capabilities of OSA application programming interface for conference call control are studied to identify which of the requirements for tightly coupled SIP conferences are met. Different scenarios for tightly coupled conferences are examined and the role of OSA application in SIP conferencing is outlined. State transition diagrams for application view on the conference call object and the sub-conference call object are developed. The OSA application view on conference participant’s state is mapped onto SIP state machine. An object-oriented approach to design and implementation of SIP-OSA conference gateway prototype is described. |
| Idioma: | No aplica |
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