Hi again,
This was an excellent script to find all Line Uri's assigned in Lync for users, response groups and dialin.
http://tomtalks.uk/2013/07/get-lyncnumberassignment-find-lync-usersobjects-by-phone-numberlineuri-powershell/
PS
HarriJaakkonen
:~/Blog/Posts>
cat ./find-all-numbers-assigned-in-lync.html