tel:URI in web pages (or anywhere else) do not work
When using the user interface of Linphone, configured with my SIP proxy that allows calling to phone numbers via phone-number@the-proxy.url, I can simply input the plain number (XXXXXXXXXX) and it adds a sip: prefix for me and the @host suffix for me.
I believe that tel:XXXXXXXXXX URLs end up calling linphone like:
linphone XXXXXXXXXXIf this was to match the behavior of the UI, it'd just work. Unfortunately, it doesn't, and I have to manually add the sip: prefix and @host suffix for it to work as expected.
Tested using linphone-desktop v4.2.5 from GNU Guix and a SIP service (voip.ms) that allows calling PSTN phone numbers.