Re: [Sip] Preventing unanticipated respondent syndrome when retargeting

[Dean Willis <dean.willis at softarmor.com>]

On Apr 4, 2008, at 3:04 AM, Elwell, John wrote:
> Dean,
>
> We already have 181 Call is Being Forwarded, which has a very similar
> meaning. Of course, we don't specify use of the Contact header field  
> in
> that response, but can't we add it?
>

I suppose that would work. The question is, does 181 imply that the  
anticipated response identity has changed? It seems like one might get  
a 181 on contact-rerouting.

I suppose we could also document 181 to only apply in a retargeting  
(or suspected retargeting, if the proxy doesn't know) case.

--
Dean

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