I have experienced something strange (at least strange for me as I have never seen it before). We were away from office for 3 days and after we get back we couldn’t dial any outbound number. After I checked what is going on, I’ve noticed that in every outbound rule, in additional settings tab, every extension was in blocked windows and I had to move it back to allowed. Nothing was configured in the meantime except I checked modules for upgrade. There was only one module for upgrade and that was framework.
Yes, I have installed a commercial module which is related to routing. After the installation it automatically adds all extensions to blocked. I have never used it before so I didn’t know.