Thank you Olle to take time to answer my question.

So the solution is send the INVITE from the same Kamailio where the device registered.

The question now is: How Can I do that taking advantage of DMQ_USRLOC module?

Thank you

Regards

---
I'm SoCIaL, MayBe

El 13/07/2021 a las 8:04 a. m., Olle E. Johansson escribió:

On 13 Jul 2021, at 14:46, Social Boh <soc...@bohboh.info> wrote:

Hello,

I'm testing DMQ_USRLOC modulo between two Kamailio servers (A) and (B)

The two servers share the same domain and using Amazon Route53 to distributes 
50% requests each Server.

The problem is when I try to make a call from user A (registered on kamailio A) 
and the user B (registered on Kamailio B).

The call follow this flow:

User A --> KamailioA --> UserB

go directly to userB because KamailioA know, via DMQ_USRLOC IP and port of 
UserB. With some Softphone the call work with audio without problem; with other 
Softphone USERB never answer the INVITE sends from Kamailio. Is it possible use 
this flow?

USER A --> KamailioA --> KamailioB --> User B

to resolve this kind of problem or is there other available option?
If the softphone is behind NAT it has a relation to one IP address in the NAT. 
You need to send the INVITE from that IP and no other IP in order to reach the 
device. Even without NAT, many devices just don’t respond to messages from 
unknown IP addresses.

/O
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