I’m not sure if this is a valid question but still I’m going to try.

I just updated from my old version of OSMOCOM to the latest one.

Upon trying to test the updated version, it seems that the ring back tone, the one that rings in the Caller (Anum/Mobile Originating) side if the call started to ring on the Callee (BNUM/Mobile Terminating) side, is missing.

Can anyone direct me to the right path where to check it?

Below are the configuration files used for each OSMOCOM elements.