GET http://[host-proxy]/api/device/cucm/PhoneTypeDisplayInstance/schema/?hierarchy=[hierarchy]&format=json&schema=1
{
"$schema": "http://json-schema.org/draft-03/schema",
"type": "object",
"properties": {
"displayInstance": {
"title": "Display Instance",
"minItems": 1,
"required": true,
"maxItems": 1,
"maxLength": 32,
"type": "any"
}
},
"schema_version": "14.0"
}