Hi All,

I am using kamailio and freeswitch in my setup. While all users are registered on Kamailio, calls are routed to Freeswitch back to kamailio and then upstream providers.

I can make user to user calls but in cases of transfer I am stuck. I am using a Polycom IP phone to test this scenario. While I initiate a attended transfer and click on transfer all the legs hangup.

When I register all users on Freeswitch this works well. I am missing something on Kamailio side. 

Please point me in the right direction.