Last email diagram got kinda deformatted. In case you need me to clarify the scenario, client sends the INVITE, receives the 200 OK and never send the ACK. After more than 5seconds the client retransmits the first INVITE again and Kamailio sends it to the second destination of the Dispatcher group.

A segunda, 13/04/2020, 13:31, Daniel-Constantin Mierla <miconda@gmail.com> escreveu:

By default the transaction that gets a final reply is kept for another 5sec or so in memory to deal with retranmissions, etc ... There is a wait_timer parameter in tm module.

The ACK after 200ok is separate transaction and has no influence on INVITE transaction. For the ACK after 300+ reply, there should be some retransmissons of the reply in the INVITE transaction.

The dialog module is influenced by the missing ACK after 200ok.

Cheers,
Daniel

On 13.04.20 13:18, Duarte Rocha wrote:
Sorry i didn't specify.

It is after the 200 Ok. Will it be different in a reply greater than 300?

Best regards
A segunda, 13/04/2020, 12:16, Daniel-Constantin Mierla <miconda@gmail.com> escreveu:
Hello,

is it about ACK after 200ok or the ACK after 300 or greater reply?

Cheers,
Daniel

On 13.04.20 13:04, Duarte Rocha wrote:
Greetings,

How much time will Kamailio keep a transaction active if the ACK to a INVITE is never received by Kamailio?

Best Regards,
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www.twitter.com/miconda -- www.linkedin.com/in/miconda