On Apr 20, 2008, at 3:33 PM, Paul Kyzivat wrote:

>
>
> Dean Willis wrote:
>> On Apr 18, 2008, at 8:27 PM, DRAGE, Keith (Keith) wrote:
>>> 302s recursed by intermediate proxies may be perfectly reasonably in
>>> certain charging environments.
>> Not if they're retargeting. I'd also say that proxy operations  
>> that  retarget are also generally unreasonable, given that (so far)  
>> we have  no way to inform the caller of the retargeting.
>
> What is your objection? Is it
> - that the caller may be billed for something he wasn't expecting?
> - that the caller may not want to talk to the new target?

Both, although my bigger concern is the general unanticipated  
respondent problem.

> The former is a billing issue, which may or may not be related to  
> this discussion, as Keith has pointed out.
>
> The latter can be dealt with via called party identity.

Which, with current specs, only kicks in AFTER the INVITE transaction  
has completed.

> In any case it is quite within the normal range of expectation to  
> day that you may end up talking to someone other than who you  
> thought you were calling.

That's probably true, but  it's not a good thing. Why do we keep  
trying to reinvent the failings of the pSTN?

--
Dean


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