Session Initiation Protocol (SIP) Rate Control
This RFC 7415 was published in 2015
The prevalent use of the Session Initiation Protocol (SIP) in Next Generation Networks necessitates that SIP networks provide adequate control mechanisms to maintain transaction throughput by preventing congestion collapse during traffic overloads.
A loss-based solution to remedy known vulnerabilities of the SIP 503 (Service Unavailable) overload control mechanism has already been proposed.
Using the same signaling, this document proposes a rate-based control scheme to complement the loss-based control scheme.
RFC 7415 introduction
The use of SIP [RFC3261] in large-scale Next Generation Networks requires that SIP-based networks provide adequate control mechanisms for handling traffic growth.
In particular, SIP networks must be able to handle traffic overloads gracefully, maintaining transaction throughput by preventing congestion collapse.
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