{
  "room": "pbx-trunk",
  "checked": "2026-10",
  "sources": [
    {
      "kind": "wikipedia",
      "title": "SIP trunking (Wikipedia)",
      "url": "https://en.wikipedia.org/wiki/SIP_trunking",
      "status": "verified",
      "last_checked": "2026-10",
      "note": ""
    },
    {
      "kind": "sipforum",
      "title": "SIPconnect technical recommendation",
      "url": "https://www.sipforum.org/technology/sipconnect/",
      "status": "verified",
      "last_checked": "2026-10",
      "note": ""
    },
    {
      "kind": "rfc",
      "title": "RFC 3261, SIP",
      "url": "https://www.rfc-editor.org/rfc/rfc3261",
      "status": "verified",
      "last_checked": "2026-10",
      "note": ""
    },
    {
      "kind": "cisco",
      "title": "Cisco Unified Communications Manager product support",
      "url": "https://www.cisco.com/c/en/us/support/unified-communications/unified-communications-manager-callmanager/series.html",
      "status": "verified",
      "last_checked": "2026-10",
      "note": ""
    },
    {
      "kind": "cisco",
      "title": "System Configuration Guide for CUCM, Release 15",
      "url": "https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15.html",
      "status": "verified",
      "last_checked": "2026-10",
      "note": ""
    }
  ]
}