Overload occurs in Session Initiation Protocol (SIP) networks when
SIP servers have insufficient resources to handle all SIP messages
they receive. Even though the SIP protocol provides a limited
overload control mechanism through its 503 (Service Unavailable)
response code, SIP servers are still vulnerable to overload. This
document discusses models and design considerations for a SIP
overload control mechanism.
Working Group Summary
This document was originally started by an ad-hoc Design Team within the SIPPING wg.
The document was then adopted by the SIP Overload Control WG once it has been created.
The draft is a design considerations document and therefore there are no implementations.
There are implementations of drafts that are based on the design considerations draft.
The document was reviewed in an early stage by the transport area.
Version 04 of the draft has also received a second review by Pasi Lassila, an
expert on control theory at Aalto university (in Finland) identified by Lars Eggert.
Salvatore Loreto is the Document Shepherd
Robert Sparks is the Responsible RAI AD