keeping libpri-1.6 ebuild and patches here rather than in bug #215593 to avoid mess.
Created attachment 148579 [details] libpri-1.6.0_beta1-r1.ebuild
Created attachment 148580 [details, diff] libpri-1.6.0_beta1-to-svn-r518.diff
Created attachment 148581 [details, diff] libpri-1.6.0_beta1-gentoo.diff
Created attachment 148582 [details, diff] libpri-1.6.0-connectedname.diff support for called party information http://bugs.digium.com/view.php?id=8824 patch from timo teräs.
I'm CC'ing Rambaldi as he seems to be the one doing the work in the voip overlay.
As evidenced by the link above, the numbering on this libpri tarballs was an accident. Asterisk 1.6.0.6 (which is in portage now) will be able to drive libpri 1.4.7 (which is also in the tree). Thank you for your report all the same, and sorry that it went unactioned for so long.