If you need to use in an external network, such as mobile phone login, business trip, or home-login RTC, you need to do mapping on the router port.
Basic communication ports: 98, 99, 843, 3283, 5995, 5996, 5997 (udp), 5998 (udp), 6001, 6002, 6003, 6004, 6005, 6006, 6007, 6008 16 ports in total, please make sure that the server The ports are already open.