We are currently using Grandstream phones which have 3 custom ringtones and a system default ringtone which is built into the phones. The 3 custom ringtones that come with the phone are terrible so we have always used the system default ringtone. We have now upgraded to version 15.5 and they added a section in the phone's template which makes external calls use ringtone 2 and queue calls use ringtone 3. Since we can't change the default template, the only way I can think of to change everyone back is to create a custom template that changes those distinctive rings back. This is going to be a nightmare since i have 150+ phones and I have to go into each extension and delete the old phone, re-add it back using the custom template then reprovision the phone. Is there a setting somewhere in the phone system to change what ringtone is used for the distinctive rings without changing every single phone's template to a custom one or am I just out of luck? I thought about converting and using the system default ringtone as ring1, ring2, ring3 but I cant find it anywhere to download. It seems to be only a built in ringtone.