[Kamailio-Users] event notifications and user aliases

[Daniel-Constantin Mierla]

Hello,

On 08/28/08 09:49, Alexander 'Leo' Bergolth wrote:
> Hi!
>
> I'd like to implement P2P presence and extension monitoring for my SIP
> network.
>   
is this UA to UA presence notification or are you using presence server?

Cheers,
Daniel

> Our users register by using a numeric extension (e.g.
> sip:226050 at wu-wien.ac.at), but most of the time, they are contacted
> using a user alias that looks like their email-address (e.g.
> sip:bergolth at wu-wien.ac.at). So the addresses stored in their
> buddy-lists won't be the "real"-SIP-URI of the users.
>
> Will there be a problem if I translate those aliases on subscription, so
> that a user may also subscribe for the presence of a user alias?
>
> If I rewrite SUBSCRIBE requests to use the "real" SIP-URI on
> subscription, the following NOTIFY messages will contain the wrong URI
> in the From-header and in the pidf body. But maybe this won't be a
> problem, since the watcher can assign it to the correct username because
> the NOTIFY belongs to the same dialog as the SUBSCRIBE?
>
> Will the user agents be able to correctly assign those notifications to
> their contacts?
>
> Any experiences with this?
>
> Cheers,
> --leo
>   

-- 
Daniel-Constantin Mierla
http://www.asipto.com