{
  "port": 1076,
  "protocol": "tcp",
  "service": "DAB STI-C",
  "oneLiner": "The control half of the DAB digital-radio Service Transport Interface, registered by WorldDAB.",
  "whatItIs": "The Service Transport Interface (ETSI EN 300 797) carries audio, data, and service information from a service provider to a DAB ensemble provider. It splits into STI-D, the unidirectional data part that carries what gets broadcast, and STI-C, the bidirectional control and monitoring part that is not broadcast; 1076 is registered to WorldDAB for STI-C. You will only see it inside a broadcast contribution network, between playout and multiplexer equipment.",
  "exposure": {
    "verdict": "never",
    "note": "STI-C controls what a DAB multiplex transmits. It belongs on a dedicated contribution link or broadcast VLAN, never on a public interface."
  },
  "checkCommand": "nc -vz -w 3 TARGET 1076",
  "links": [
    {
      "title": "IANA port registry — 1076 (dab-sti-c, assigned to WorldDAB)",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=1076",
      "kind": "iana"
    },
    {
      "title": "WorldDAB — the body that holds the DAB STI registrations",
      "url": "https://www.worlddab.org/",
      "kind": "official-docs"
    }
  ]
}