[SR-Users] Routing re-INVITEs after phone port change

[David Cunningham]

Thank you Alex.


On 18 August 2015 at 14:06, Alex Balashov <abalashov at evaristesys.com> wrote:

> It should not change during the call. The rules prohibit that. The only
> way to change the remote target address within a dialog is, ironically, via
> a reinvite and/or response, but that would need to come from the UA itself.
>
> Your best bet to ensure that the NAT pinhole to the endpoint does not go
> away during the call is some sort of keepalive, be it the NAT "ping"
> functionality of the nathelper module or the in-dialog OPTIONS pings from
> the dialog module. That should keep the NAT mapping refreshed.
>
> If the endpoint still becomes unreachable, there's not much you can do.
> Nothing that would conform to the protocol state machine, anyway. :-)
>
> --
> Alex Balashov | Principal | Evariste Systems LLC
> 303 Perimeter Center North, Suite 300
> Atlanta, GA 30346
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> Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
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>
> Sent from my Nexus 10.
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-- 
David Cunningham, Voisonics
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