/usr/lib/libsofia-sip-ua.so is in libsofia-sip-ua-dev 1.12.11+20110422-1build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libsofia-sip-ua.so.0.6.0
/usr/lib/libsofia-sip-ua.so.0.6.0