[Users] 183 early media and NATed clients

Ovidiu Sas sip.nslu at gmail.com
Tue Feb 13 00:52:56 CET 2007


Hi Jeff,


Why don't you try to fix the client?
If you mess with 180/183 you will have issues with real early media
scenarios.  For instance, if a subscriber is making a call into an IVR
that is using early media (let's say a 1-800 number for a bank), the
subscriber will not be able hear the IVR and therefore the call will
always fail.


Regards,
Ovidiu Sas

On 2/12/07, Jeff Williams <jeffw at globaldial.com> wrote:
> Bogdan-Andrei Iancu wrote:
> > Hi Jeff,
> >
> > I'm afraid it is not possible - the NAT traversal is based on
> > symmetric IP traffic to be able to push inbound traffic. But if the
> > client does not send anything, the nat bind will not be created and no
> > inbound traffic will be accepted.
> Bogdan,
>
> Is there some way to send a 180 response as well as a 183 response for
> NATed clients?
>
> Jeff
>
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