I understand that the problem you want to solve is the following :

Or, when you meet someone and want get your phones paired, you
just type the target name because you have your cell phone in your hand.
The phones get paired. You don't need to type a long SIP URI and
Mobile IPv6 home address.

also mentioned in other email:

I'll tell it to people that I know only. I'll tell it using a user friendly
mechanism called "pairing" : We meet each other with our cell phones,
and agree to exchange our contact information.


I guess that what you want to avoid is to input in your phone the URI of the person you met, and instead automatically interchange URIs.

In any case someone needs to enter something in their phone, either a URI, search keyword, TEL, etc to pair a contact...


SE



Quoting Pars Mutaf <[EMAIL PROTECTED]>:

On 10/12/07, Spencer Dawkins <[EMAIL PROTECTED]> wrote:

> The privacy problem: normally I shouldn't be able to discover
your SIP URI.

I'm guessing that if you can't tell people your SIP AOR, then SIP is not
for
you.


Hello,

I won't publish my SIP URI in a phone book allowing anyone to see it.
We already agreed on that.

I'll tell it to people that I know only. I'll tell it using a user friendly
mechanism called "pairing" : We meet each other with our cell phones,
and agree to exchange our contact information. So, the procedure is
under our control. Pairing is good for us also because it allows us to
exchange a secret key (note that this is already enough motivation for
the pairing idea).

The point is that, if I give you my SIP URI (using the pairing procedure)
then I can also give you my Mobile IPv6 home address using the same
pairing procedure. In other words, there is _no more resolution_ from
SIP URI to home IP address. You get them **concurrently**.

We have each other's SIP URIs and home addresses.
->SIP application is happy, it has the target SIP URI.
->Routing problem is solved by mobile IPv6.

My question was: do we need the SIP trapezoid in this case.

Thanks,
pars






Thanks,

Spencer




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