Just an FYI, we have had the 3PIP problem with not being able to answer call queue calls resurface. It is somewhat of a pocket case issue. We have been troubleshooting a problem with a new feature, Direct Routing service numbers having no audio on call queue calls. This issue was for the Teams soft client. But, the 3PIP phones were behaving differently, The end user continues to hear music on hold and the 3PIP phone just hears silence. When the 3PIP phone hangs up, the call will continue with the flow (transfer to voicemail), but if the 3PIP phone doesn't hang up, the caller will continue to hear music on hold. The issue with the no audio for Teams soft clients was just resolved with a software release for the Ribbon SBC, but the problem with the 3PIP phones still manifests. This is only for calls on a Direct Routing service numbers. Cloud service numbers work as designed.