using kamailio/openser als forwader of INVITE Requestsjavasc

Hi,

I am trying to implement some services of Asterisk in IMS Core.
Therefore I am forced to use for one service "voicemail" the kamailio server between IMS and Asterisk.

In my case, the kamailio schould play the role of forwader, it should regenerate INVITEs to Asterisk in case of 486 client responses (busy) from IMS to Asterisk.

I read some HowTos in Net of integrating Asterisk with Openser, but none of them were helpful in my case.

thanks in advance

You have to set a failure_route for the call. If in failure route the code is 486, then create a new branch going to asterisk and relay again.