Hello everybody, I'd like to handle my calls like this: If callee sends a "486 User Busy" AND a certain header is present in the response, Freeswitch would send a "404 Not Found" to the caller. The following code would solve my problem: <extension name="header_test_extension"> <condition field="network_addr" expression="10.1.1.1"> <action application="set" data="continue_on_fail=USER_BUSY"/> <action application="bridge" data="sofia/gateway/profile/${sip_to_user}"/> <condition field="${sip_h_X-Header-Name}" expression="Header Value"> <action application="respond" data="404"/> <action application="hangup"/> </condition> </condition> </extension> But the thing is that Freeswitch doesn't allow nested conditions. Any ideas on how I can handle this? Santiago Soares Fone: (41) 8488-0537