Busy signal

{
  "id": "MLC-T-IND-000873",
  "term": "Busy signal",
  "field": "Industrial and trades",
  "definition": "An audible tone indicating that the dialed telephone line is currently in use or unavailable to receive a new call. This signal typically consists of a rapid series of short tones, alerting the caller that the connection cannot be completed at that moment. It is a standard indication in traditional telephony systems.",
  "synonyms": [
    "engaged tone"
  ],
  "subject": "Electrical engineering",
  "see_also": [
    "engaged tone"
  ],
  "translations": {
    "de": "Besetztzeichen",
    "es": "señal de ocupado",
    "fr": "signal d'occupation"
  },
  "url": "https://mlchart.com/terminology/industrial/busy-signal/"
}