Maintainers for asterisk are Debian VoIP Team <pkg-voip-maintainers@lists.alioth.debian.org>.
You may want to refer to the following individual bug pages: asterisk-config, asterisk-dahdi, asterisk-dev, asterisk-doc, asterisk-mobile, asterisk-modules, asterisk-mp3, asterisk-mysql, asterisk-ooh323, asterisk-tests, asterisk-voicemail, asterisk-voicemail-imapstorage, asterisk-voicemail-odbcstorage, asterisk-vpb.
You might like to refer to the asterisk package page, or to the Package Tracking System.
If you find a bug not listed here, please report it.