Hi,
I've got an installation that is still running Kamailio 1.5.x. Yes, I know: "They're running WHAT?" As far as I'm concerned, it was EOL'd in early 2010. Nevertheless, that doesn't stop the customer from running it. They're probably the most change-resistant customer in the history of IP telecom, and, knowing this industry, that's a high bar. There's not much I can do about it.
Anyway, I have a bit of a mystery:
GW Proxy PBX ==================================================
------- INVITE ------>
<---- 100 Trying ----
-------- INVITE -------->
<------ 100 Trying ------
<- 503 Service Unavailable
---------- ACK --------->
<- 500 Service Una...
-------- ACK -------->
There is no basis in the configuration for the translation of the "503 Service Unavailable" reply to "500 Service Unavailable", so I'm thinking it has to be rooted in some default module behaviour.
Any insight would be appreciated!
-- Alex