{
  "target_extensions": ["101", "202", "303"],
  "list_filter_type": "blacklist",
  "extension_filter_list": [
    "111",
    "222",
    "333"
  ],
  "blacklisted_terms": ["accounting", "inpatient"],
  "prepend_extensions": [
    {"name": "Park 300", "extension": "300"},
    {"name": "Park 301", "extension": "300"},
    {"name": "Lab", "extension": "340"},
    {"name": "Business", "extension": "249"}
  ]
}