A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : The Session Initiation Protocol (SIP) CONGESTION Header Field
Author(s) : D. Malas, R. Terpstra
Filename : draft-malas-sipping-congestion-header-01.txt
Pages : 20
Date : 2006-5-4
This document defines a new header field for use with SIP. The
CONGESTION header field is used to report insufficient resources to an
upstream element. It provides a means for passing the congestion
information, but does not dictate how the receiver of the information
should react to the information. This header is intended to provide a
mechanism for decreasing the dependence on the 503 response code for
determining an overloaded state. In addition, it provides detailed
congestion awareness functionality, to compensate for current limited
capabilities in SIP. This functionality can provide specific
information regarding the cause of the congestion for custom
aplication treatment policies.
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