add sip query catalog interval config

trunk/conf/full.conf

@@ -370,6 +370,9 @@ stream_caster {
         # Whether bundle media stream port.
         # default: on
         invite_port_fixed   on;
+        # interval to query equipment list from equipment or subordinate domain, unit(s)
+        # default: 60
+        query_catalog_interval 60;
     }
 }