I own two businesses and their phones are on a working CME system.
Ephone-dn 1 is configured with SNR and when an incoming call comes in to this DN, both the office phone and my cell phone rings as expected and needed.
I also need to configure Ephone-dn 2 with SNR to ring the phones in the office and also the same cell phone. This way, when I am out of the office, I can answer calls from both companies. I do have a second number that also rings my cell phone so if a different ANI to send calls to can work.