sometimes we have no ringback tone when doing a call with Sangoma Phone Desktop. The phone is ringing on the other end and when the phone is picked up both parties can talk to each other. This issue occurs random. I even have it on internal calls. Restarting the application fixes the problem. I had it on MacOS and Windows. I never have this problem in the old softphone Zulu. There is no antivirus software installed which could be the problem. Does anyone have the same problem?
Had the same issue today again. Called internal numbers and there were no ringback tones.
Here is a call from my extension 11 to my colleagues extension 19: https://pastebin.freepbx.org/view/c1c91023
After restarting the Sangoma Phone Desktop it works again.