The magic number is a short, four-digit phone number, introduced by France Télécom in 2004, designed to make it easier to remember long business numbers. After dialing this access number, the caller can type or speak a word associated with a specific company, brand, or operation. This system uses voice recognition or manual input to automatically route the call to the desired department, such as customer service or after-sales support. The magic number is also compatible with various existing pricing structures.