This question probably belongs in the asterisk forum, but here's a quick answer:
It's most likely a reINVITE in order to modify the existing session. Compare it to the
original and see if anything has changed (like the codecs in the SDP).
Med vennlig hilsen
Pan B. Christensen
Utvikler
Phonect AS
From: sr-users <sr-users-bounces(a)lists.kamailio.org> On Behalf Of Wilkins, Steve
Sent: onsdag 13. juni 2018 12:47
To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org>
Subject: [SR-Users] Asterisk inviting Kamailio
Hello All,
I have noticed that sometimes when a call is made from one endpoint to another through
Asterisk via Kamailio, Asterisk sends an INVITE to Kamailio even after the call has been
established. Sometimes this does not happen. When it does happen, calls drop.
Why would an INVITE be sent back to Kamailio?
Also, Pan, I am working on the response you requested yesterday.
Thanks you All,
-Steve