Re: [Sipping] sipping session mobility

[Diego B <diegob at mailvision.com>]

Hi;
If the REGISTER response change anything in the UA route information ( 
like Service-Route ) it may be sent before the re-INVITE.

If the REGISTRAR does not change anything in the current dialog, I think 
the two ( REGISTRAR and re-INVITE ) may be sent in parallel.

My question is now, if the REGISTER brings a new changed Service-Route, 
the UA may use the new route to send
the re-invite ( changing in dialog routing ) or keep using the route it 
initially use when the dialog was created.



Regards
Diego B


Salvatore Loreto wrote:

> Hi all,
>  
> I've a question about the simultaneous mobility, of course it is a 
> special case of a singol host mobility:
>  
> when a SIP UA changes his subnetwork and it obtains a new IP address,
> it send a re-INVITE message, but my question is:
>  
> the REGISTER message (inorder to uptodate it location information) 
> must be sent before or after the re-INVITE.
> In the case of simultaneous mobility it should be sent before.
>  
> what do you think about?
>  
> best regards
> /sal
>
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