asterisk pbx / generated doxygen docs

On the Asterisk PBX Development page you'll find a reference to Doxygen generated documentation:

Most of the documentation related to the source code is embedded in the source files and is processed with Doxygen. The latest version of the Doxygen generated source documentation can be found on http://doxygen.asterisk.org.

However, it cannot be found there, as that URL has been returning a 503 Service Unavailable for quite some time now.

Instead, you can go to: asterisk-doxygen.osso.pub

There, a version of the Asterisk PBX master branch documentation can be found. It is updated weekly. Courtesy of OSSO B.V.