L<FS::svc_pbx> - PBX service class
+L<FS::pbx_extension> - PBX extension class
+
+L<FS::pbx_device> - PBX device class
+
L<FS::svc_cert> - Certificate service class
L<FS::svc_dish> - Dish network service class
L<FS::cust_main_invoice> - Invoice destination class
+L<FS::cust_main_credit_limit> - Customer credit limit events class
+
L<FS::cust_class> - Customer classification class
L<FS::cust_category> - Customer category class