How to install `sofia-sip` and `spandsp` modules?

How to install `sofia-sip` and `spandsp` modules?

The FreeSWITCH docs mention that they were split out from the FreeSWITCH repo and that "Packages for Sofia-sip and SpandDSP are available for all supported platforms from our packaging repos.", but couldn't find more info on this. I searched the Debian packages for example for `spandsp` , but not sure which one to use.

Should these be compiled from their source repos instead?