I'm having a problem, I know a router phone or SBC is required for cloud service, and have run into a few posts from others mentioning this in response to the problem I'm having, but this dialog box (below) seems the place where you WOULD configure a router phone, or SBC like any other...
I'm trying to manually configure a Cisco 7975 on the free version of the system (18.0 Update 6 (Built 889)) - this is the linux image.
I'm following these directions and I have used a windows TFTP server to bring the 7975 phone up to 8.5.4 using Cisco's firmwares...