Re: [Sip] submission of a new I-D: "Dialog Event foRIdentityVErification"

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

On Oct 29, 2008, at 5:55 PM, Paul Kyzivat wrote:

> While I agree with what you say, this only works if the verification  
> will happen in a timely way. If you want white/black lists, then the  
> verification must happen even before the phone rings. Is it  
> reasonable to assume that in typical deployments the time for the  
> reverse lookup will be quick enough to give reasonable experience to  
> the caller? Or will he have already hung up? (I don't have a good  
> sense for the numbers here.)

a Really Bad Case would be 5 seconds PDD, with more typical being on  
the order of 1 second.

> What will the caller be hearing until this gets done? Perhaps 180  
> could be returned, which would at least give *some* feedback.

You might hear a chime for "Return Routability Check completed".

Of course, if we were fixing this "right", it would be yet-another  
precondition.

--
Dean



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