I'd like to package sflphone, which bundles an apparently never officially released version 0.2.3 of iax. That version seems to be the result of the work of the iaxclient authors.
sflphone needs iax-0.2.3. Furthermore, iaxclient is currently bundling this version of iax (despite BR: iax-devel, which is not used). The only other package requiring iax is coccinelle, but there the dependency also seems incorrect, rather iaxclient is what is actually used.
I'd hence propose updating the iax to this 0.2.3 version and fixing iaxclient to not use the bundled version.
One other approach would be to build iax together with iaxclient and ship the library in iaxclient-libs or similar. This might make sense since aix looks dead upstream (csv repo has also disappeared), and it looks like the iaxclient authors have taken care of further development in recent times.
For the first approach of updating this package to 0.2.3, here are proposed SPEC and SRPM:
Created attachment 925525 [details]
Unbundle iax, spandsp
Since I see that you are also the iaxclient maintainer, here is the patch which makes iaxclient use the unbundled iax (and also spandsp).
iaxclient-libiax build for rawhide.