Hi,

 

Kamailio server is behind our company's softswitch and acts as a sip application server.

I notice that there are calls that the softswitch replied with 503 "service unavailable" and kamailio sent to the originator leg 500 "service unavaileable".

When kamailio recieved 504 or 502 it sends them back as is. shouldn't it be the same with 503?

 

It also does not have a "to tag" in the CDR. And the "to tag" in the 503 that was recieved is not equal to the 500 reply "to tag"  kamailio sent back.

 

any ideas?

 

BR,

Uri