Issues handling audio session in iOS

[IonutChelaruB]

Hi, I'm trying to implement the linphone sdk in an iOS application without using call kit. I'm trying to play a custom ringtone when a call is received.
The issue i'm encountering is that the sdk makes changes to the audio session so the ringtone is no longer played on the speaker, which means I'm forced to listen to route changes and change again the audio session configuration to the one I want but this makes the sound bad for the first 5 seconds until all changes are stopped.
Is there any way to avoid this behaviour?

I've also tried passing the ringtone path to the sdk but I've had no success with it. Is it supposed to work?