L<FS::svc_phone> - Phone service class
+L<FS::phone_device> - Phone device class
+
+L<FS::part_device> - Device definition class
+
L<FS::phone_avail> - Phone number availability cache
L<FS::cdr> - Call Detail Record class
L<FS::pkg_category> - Package category class (invoice oriented)
-L<FS::pkg_class> - Package class class (tax oriented)
+L<FS::pkg_class> - Package class class
L<FS::part_pkg> - Package definition class