curl --request POST \
  --url https://{api_endpoint}/v1/channels/phone \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "security": {
    "api_key": "<string>",
    "client_secret": "<string>",
    "secure_trunking": false,
    "authentication": false,
    "username": "<string>",
    "password": "<string>",
    "password_is_set": false
  },
  "description": "<string>",
  "service_provider": "sip_trunk",
  "custom_invite_headers": [],
  "put_caller_on_hold_on_transfer": true,
  "send_provisional_response": true,
  "error_handling": {}
}
'

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>"
    }
  ]
}