Simultaneous Ring & Voicemail

B4 providing the H2D outline, just want to clarify....
Step One - incoming call rings RC IP phone and POTS line simultaneously (how many rings?)
Step Two - after the number of rings in step one, you want your cellphone to ring (do you want the RC IP phone & POTS line to stop ringing?)
Step Three - After N/A on the three phone above, end up in the VM for your RC phone, right? 

I've done this and deleted Ring Central app on my cell phone.  Phones appear to be forwarding, but I'm not getting Voicemails that people are leaving.  Thoughts?