[Oreka-user] Record just remote channel

Hi all, I have an issue related to the rtp record.
Currently I'm recording rtp in an ubuntu server that have a PBX installed.
Everything is running well, but I just want to record the incoming rtp and not the outgoing.
I was looking the source code and I found some not documented parameter that it's called "AudioKeepDirectionDefault"
Also I saw that this parameter allow a few parameter like remote, local, none, both, etc.
By default this parameter has the value both... if I change it by "remote"... the orkaudio run without any problem, but never generate the wav file... I just have the mcf... and I don't know if the file have just the remote audio or not because I don't know how play this file....
If anyone know a shortcut to do that or the correct way to use this parameter I will be happy to hear it.
Best Regards.