Pushed a new commit to the 'develop' branch, which handles alertinfo2ringtype conversion nicely and correctly this time.

[mbielech5]

Is it possible to expose the ringtype setting to the sccp_manager FreePBX module in a newer release of sccp_manager? Or, is there a chan-sccp '_custom' .conf' file that ringtype could always be set to inside?

I can set it manually within the sccp.conf file, but any server config change/save with the sccp_manager module of FreePBX overwrites/removes the ringtype parameter.

Pushed a new commit to the 'develop' branch, which handles alertinfo2ringtype conversion nicely and correctly this time.

Also added a way to change the default ringtype

[general]
...
ringtype=inside                               ; default value is "outside"
...

Thanks you for providing an initial solution to the issue (that always helps a lot) and also
thank you for making me aware of this lack in standards support :-)

Originally posted by @dkgroot in chan-sccp/chan-sccp#368 (comment)