Hostname/cname : Service and protocol for SRV. The format should be "xxx(service).xxx(protocol)". Take above picture as reference, _sip is service and _tls is protocol.
IP/Domain name : The target for SRV record.
Priority : Multiple records have the same name and service. Priority is used to decide which record is prior.
Weights : Multiple records have the same name, service and priority. Wieghts is used to decide which record is prior.
Port : Enter the Port number.
Notice
You can set 50 DNS records for free.
If there is any mistake, it would make your record invaild.
