Below you will find insight on how to setup vPhone incoming calls while in an active dial session:
To complete, please see the below:
#3 - Toggle on the option to Enable "Inbound Call Handling In Dialer"
After that is completed, you can now actively see all incoming calls directly from your vPhone line while still inside of an active dial session! Call backs from previous sessions will now have an option for Dynamic dispositions to use the ones used for the original call.