by Jake » 10/12/2020
I know you said that call forwarding is not an option, but have you considered call forwarding with the simultaneous option? This is what we use here.
Each account can only be logged in with one device, so if you want to answer a call on any one of multiple devices you will have to have multiple accounts.
What we have done here is we hhave several mobiles have the Fongo app, on my PC I have a Bria softphone running with a FPL account, and our main home line is a FPL account.
The main account has the other numbers set up as call forwarding in simultaneous mode, so all devices ring at the same time. Answering the call on one device ends the ringing on all the others.