net-voip/
murmur

Mumble is an open source, low-latency, high quality voice chat software

https://wiki.mumble.info

There are no pull requests

You think something is missing here?
Start with filling a new pull requests.

If you also like to help the Gentoo project, you can consider sending a Pull Request via GitHub.
Before doing so, you might want to take a look at the wiki page.