{
  "room": "firewall",
  "checked": "2026-10",
  "sources": [
    {
      "kind": "ports",
      "title": "Cisco Expressway IP port usage (X14.3 and X15.0)",
      "url": "https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X15-0/ip-port/exwy_b_cisco-expressway-ip-port-usage-configuration-guide-x15.html",
      "status": "verified",
      "last_checked": "2026-10",
      "note": ""
    },
    {
      "kind": "ports",
      "title": "CUCM 15 TCP and UDP port usage",
      "url": "https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_m_tcp-and-udp-port-usage-12-0.html",
      "status": "verified",
      "last_checked": "2026-10",
      "note": ""
    },
    {
      "kind": "rfc",
      "title": "RFC 3550, RTP",
      "url": "https://www.rfc-editor.org/rfc/rfc3550",
      "status": "verified",
      "last_checked": "2026-10",
      "note": ""
    },
    {
      "kind": "rfc",
      "title": "RFC 8445, ICE",
      "url": "https://www.rfc-editor.org/rfc/rfc8445",
      "status": "verified",
      "last_checked": "2026-10",
      "note": ""
    },
    {
      "kind": "community",
      "title": "Cisco Community, Collaboration knowledge base",
      "url": "https://community.cisco.com/t5/collaboration-knowledge-base/tkb-p/4691-docs-collaboration-voice-video",
      "status": "verified",
      "last_checked": "2026-10",
      "note": ""
    },
    {
      "kind": "wikipedia",
      "title": "Real-time Transport Protocol (Wikipedia)",
      "url": "https://en.wikipedia.org/wiki/Real-time_Transport_Protocol",
      "status": "verified",
      "last_checked": "2026-10",
      "note": ""
    }
  ]
}