Need to have a Stock Rom with Root, a File Manager go to System / CSC and rename the file in Others.xml Others.xml.old, then copy the file attached here and change permissions in RW-RR, restart. On restart you will magically enabled CallRecording.
It works perfectly!
I am not responsible for any changes that you will make in your device.
See you soon ..... Appearance some developer to update Xposed framework compatible with Lollipop .... Thanks