Summary
Although the Internet does not rely on a connection-oriented paradigm as the PSTN does—including connection establishment, data transfer and connection termination—several signalling protocols are nonetheless required. The need for signalling protocols is manifold. Three such routing protocols with rather different purposes and goals are the Session Initiation Protocol (SIP), the Next Steps In Signalling (NSIS) framework and the Common Open Policy Service (COPS) protocol. SIP supports application-level signalling to establish, maintain and terminate Voice over IP calls, while NSIS and COPS instead operate at the network level. NSIS is a signalling framework supporting network-level signalling of QoS parameters between network elements such as routers. COPS supports policy-based network management and configuration of network elements.
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© 2008 Springer-Verlag Berlin Heidelberg
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Marchetti, I. et al. (2008). Signalling. In: End-to-End Quality of Service Over Heterogeneous Networks. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-79120-1_4
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DOI: https://doi.org/10.1007/978-3-540-79120-1_4
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-79119-5
Online ISBN: 978-3-540-79120-1
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