I don't see how it happened, but if the ChangeLog is correct it happened at least once for alpha and just once for hppa. The cause appears to be some missing dependencies, and the voip team should have notified the two arch teams but did not.
tester and I are already in voip herd; the metadata of the ebuild needs to be updated...
(Rererere)Keyworded on alpha.
Marked ~hppa.