Good on all of you who are back up. I'm not. Getting "Service Not Configured" on the 110 box I configured with the auto-configuration page. It was showing "Register Failed: 401 Unauthorized", so I thought, what the hell... let's try that. I've since deleted the SP1 profile and manually entered everything (including 8891 v. 5060) and still shows Service Not Configured.
The other 110 box, I haven't touched. It still shows "Register Failed: 401 Unauthorized". I'm going to manually change the proxy settings to 8891, but suspect that's wishful thinking as well.
I've power cycled both boxes, and it made zero difference.
ETA: as suspected, changing the manually configured 110's ports to 8891 did nothing to change the "Register Failed: 401 Unauthorized" error. All calls are rejected by the service provider.