Re: [sipX-dev] Getting the status of a phone
On Thu, 2009-06-25 at 22:08 -0400, Dale Worley wrote:
> On Thu, 2009-06-25 at 12:14 -0400, Joly, Robert (CAR:9D30) wrote:
> > In lieu of GRUUs, could the RLS determine that to or more registered
> > appearances belong to the same phone by comparing their NAT-compensated
> > Contacts which takes into account the public & private addresses?
>
> Yes, the combination of public and private address for a contact is a
> good identifier also.
>
> Let us look at this problem in reverse -- how does the user specify the
> phone in question?
Where are you going with this?
Phones don't reliably identify themselves uniquely in any way that both:
a user can easily use, and the registrar can readily correlate. As far
as I can tell, unless we can configure some unique identifier into the
Contact registered by the phone (a value selected by sipXconfig and put
only into a phone-specific configuration, and uniquely identifiable in a
registration), this problem is essentially intractable.
Any partial solution (one that works sometimes but is not completely
reliable) is, as far as I can see, not really an improvement over the
current situation.
If we can put something into the Contact address registered by a phone,
I think we're done; if not, I don't really see the point of spending
time on a series of hacks, because the current situation just isn't that
bad.
