The solution is much more simple.. Register peers through the intermidiary proxy using the sip PATH extension. Not only will asterisk show the address=original IP of the peer but also the RTT.

Cheers,

Sergiu

On Tue, Jan 15, 2019, 5:29 AM Daniel Tryba <d.tryba@pocos.nl wrote:

On Sun, Jan 13, 2019 at 10:08:31PM +0300, Soltanici Ilie wrote:
> With Asterisk, we are able to get some peer round-trip connection statistic by setting qualify=yes for the specified peer.
> It sends periodic OPTIONS to the peer and calculates the time round trip time.
> It's something like - "Status: OK (30 ms)".
> Is there any way to achieve this in Kamailio by using nathelper??module, or any other?

I think the only way to do this is to make this yourself (tm). In your
favorite scripting language, query the locations and fire OPTIONS and
measure the time for a response (if any) on basis of the "random" callid
you create. If you route these requests through kamailio you will
prevent any NAT problems or connection with TCP endpoints.

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