{
  "id": "t11-l01-studio-has-regions",
  "title": "Studio has regions",
  "checked": "2026-10",
  "sources": [
    {
      "label": "Technical requirements PDF",
      "url": "https://documentation-be.five9.com/bundle/five9-technical-requirements/raw/resource/enus/five9-technical-requirements.pdf",
      "kind": "vendor",
      "status": "ok",
      "lastChecked": "2026-10",
      "note": "Fetched for this lab in October 2026. Re-read before you buy hardware or open a firewall."
    },
    {
      "label": "IANA service names and port numbers",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml",
      "kind": "ports",
      "status": "ok",
      "lastChecked": "2026-10"
    },
    {
      "label": "RFC 3261, SIP: Session Initiation Protocol",
      "url": "https://www.rfc-editor.org/rfc/rfc3261",
      "kind": "rfc",
      "status": "ok",
      "lastChecked": "2026-10"
    },
    {
      "label": "RFC 1035, domain names",
      "url": "https://www.rfc-editor.org/rfc/rfc1035",
      "kind": "rfc",
      "status": "ok",
      "lastChecked": "2026-10"
    },
    {
      "label": "RFC 2782, DNS SRV",
      "url": "https://www.rfc-editor.org/rfc/rfc2782",
      "kind": "rfc",
      "status": "ok",
      "lastChecked": "2026-10"
    },
    {
      "label": "RFC 9293, Transmission Control Protocol",
      "url": "https://www.rfc-editor.org/rfc/rfc9293",
      "kind": "rfc",
      "status": "ok",
      "lastChecked": "2026-10"
    },
    {
      "label": "RFC 768, User Datagram Protocol",
      "url": "https://www.rfc-editor.org/rfc/rfc768",
      "kind": "rfc",
      "status": "ok",
      "lastChecked": "2026-10"
    },
    {
      "label": "Studio signaling ports in the PDF are easy to misread as universal VCC trunk ports. Confirm which SBC your domain uses.",
      "url": "",
      "kind": "note",
      "status": "confirm",
      "lastChecked": "2026-10"
    }
  ]
}