I answer myself. Maybe I’m paranoid or this is actually a working solution!?
After reading other posts about this issue, I changed the “Country Indication Tones” to “Sweden”. I truly doubt that this setting is of any importance…
However, I do believe that the failing Apply Config is important and I’ve made a workaround for fwconsole reload.
I don’t know what to think but the sound is working and Asterisk stop calling when I hang up. I don’t know if this is the solid solution or just a working theory…! Time will tell!
Thank you! Yes, I know and I’ve showed all these threads to my boss but we’re a dedicated Ubuntu company and he doesn’t want Red Hat in the LAN… and I can understand, Red Hat is complicated.
I’ve made a great documentation of all of this, every part, that I shall publish any day soon because I want more people to go Ubuntu so I have a greater community to ask in the future!
I hate being alone with my headache! Life is too short for that!