freetdm : Library implementing unified high level API for both signaling and I/O for multiple telephony boards ( http://www.freeswitch.org/ )
wanpipe : Wanpipe driver for Sangoma PCI/PCIe Telephony Cards ( http://www.sangoma.com/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a freeswitch
For Paludis use this rsync : rsync://gentoo.zugaina.org/freeswitch-portage
If you have a problem : ycarus(-at-)zugaina.org