Maintainers for libsofia-sip-ua0 are Debian VoIP Team <pkg-voip-maintainers@lists.alioth.debian.org>.
You may want to refer to the following packages that are part of the same source: libsofia-sip-ua-dev, libsofia-sip-ua-glib-dev, libsofia-sip-ua-glib3, libsofia-sip-ua-glib3t64, libsofia-sip-ua0t64, sofia-sip-bin, sofia-sip-doc.
You might like to refer to the libsofia-sip-ua0 package page, to the Package Tracking System, or to the source package src:sofia-sip's bug page.
If you find a bug not listed here, please report it.