[Users] detecting if both caller and callee are behind NAT

[Jayesh Nambiar]

Hi Bogdan,
  the solution you gave was to detect if caller and callee are behind same NAT, I just wanted to detect if caller and calee are behind "NAT". Can you help me in defining condition for this.

Bogdan-Andrei Iancu <bogdan at voice-system.ro> wrote:
  Hi,

this is a topic largely discussed in the past - a google on the archive 
will give you a lot of info.
shortly, you have to you avp_check() to compare the src_ip of the INVITE 
with the destination of it (dst_uri). See the avpops and the pseudo 
variables docs.

regards,
bogdan

Jayesh Nambiar wrote:

> Hi all,
> I am trying to implement the following scenario:
> Whenever a NATed client calls to user at public IP or whenever a user 
> at public IP calls a NATed client, I dont want to use mediaproxy. the 
> fix_nated_sdp function does the job.
> But when both the caller and callee are behind nat, only then 
> mediaproxy should be used. Can someone please help me in defining a 
> condition which will return true if both the caller and callee are nated.
> I tried a lot, but my conditions allow calls from NATed client to 
> public IP clients to use mediaproxy which I dont want.
> 
> Please help me in this regard, as I want to minimise the use of 
> mediaproxy as much as possible.
> 
> Thanks in advance,
> jayesh
>
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