[Freeswitch-users] woomera specific purpose (or maybe opal)

Hi there, I come to you again with very specific question. Is there a possibility to make woomera or opal work with freeswitch, cause I need it for specific purpose only. I don't need the call to work at all, what I would need would be if a call comes to woomera channel, just drop the call and generate specific release code. It is required for specific billing purpose in combination with mvts. Thank you very much. btw. about that other problem I had with incoming calls rtp not working, it was a nat problem. Josip