{
  "id": "t15-l06-the-gateway-cut-without-pretending-to-be-the-cub",
  "title": "The gateway cut, without pretending to be the CUBE guide",
  "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": "SIP trunk options chapter",
      "url": "https://documentation.five9.com/bundle/technical-reqs/page/technical-reqs/SIP-trunk-options/_ch-five9-sip-trunk-options.htm",
      "kind": "vendor",
      "status": "ok",
      "lastChecked": "2026-10"
    },
    {
      "label": "RFC 3261",
      "url": "https://www.rfc-editor.org/rfc/rfc3261",
      "kind": "rfc",
      "status": "ok",
      "lastChecked": "2026-10"
    },
    {
      "label": "RFC 3550, RTP",
      "url": "https://www.rfc-editor.org/rfc/rfc3550",
      "kind": "rfc",
      "status": "ok",
      "lastChecked": "2026-10"
    },
    {
      "label": "RFC 3551, RTP profile for audio and video",
      "url": "https://www.rfc-editor.org/rfc/rfc3551",
      "kind": "rfc",
      "status": "ok",
      "lastChecked": "2026-10"
    },
    {
      "label": "ITU-T G.711",
      "url": "https://www.itu.int/rec/T-REC-G.711",
      "kind": "standard",
      "status": "ok",
      "lastChecked": "2026-10"
    },
    {
      "label": "RFC 8446, TLS 1.3",
      "url": "https://www.rfc-editor.org/rfc/rfc8446",
      "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": "ITU-T E.164, international public telecommunication numbering",
      "url": "https://www.itu.int/rec/T-REC-E.164",
      "kind": "standard",
      "status": "ok",
      "lastChecked": "2026-10"
    },
    {
      "label": "RFC 1918, private internet addresses",
      "url": "https://www.rfc-editor.org/rfc/rfc1918",
      "kind": "rfc",
      "status": "ok",
      "lastChecked": "2026-10"
    },
    {
      "label": "RFC 4787, NAT behavior for UDP",
      "url": "https://www.rfc-editor.org/rfc/rfc4787",
      "kind": "rfc",
      "status": "ok",
      "lastChecked": "2026-10"
    },
    {
      "label": "NANP versus E.164, 20 ms ptime, and 'no internal extensions' are practitioner cautions. They are not quoted here as Five9 requirements.",
      "url": "",
      "kind": "note",
      "status": "confirm",
      "lastChecked": "2026-10"
    }
  ]
}