Dean Willis <[EMAIL PROTECTED]> wrote on 09/25/2007 03:05:47 PM:
>
> It seems like there's more motivating draft-polk-sip-rph-in-
> responses-00 than just the need to prioritize access to scarce
> gateway resources. A lot of the people I've talked to are thinking
> that it is also useful for prioritizing message processing in
> congested proxies or other SIP nodes (like B2BUAs, call center
> queues, whatever).
>
> It has even been suggested that the RPH value might be used by a
> congested node for selective discard of responses, which has some
> interesting impacts on the overload queueing model.
>
>
Req 13 in draft-ietf-sipping-overload-reqs already provides for this
REQ 13: The mechanism must not dictate a specific algorithm for
prioritizing the processing of work within a proxy during times of
overload. It must permit a proxy to prioritize requests based on
any local policy, so that certain ones (such as a call for
emergency services or a call with a specific value of of the
Resource-Priority header field [3]) are processed ahead of others.
Janet
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