METHOD AND APPARATUS FOR DOWNLOADING TONES TO MOBILE TERMINALS

摘要

A method and apparatus for downloading tone data from a public land mobile network (50) to a mobile telephone unit (20) are disclosed. A mobile telephone unit (20) includes means (160) enabling the user to request downloading of tone data to the mobile telephone unit (20) from a public land mobile network (50) via a connectionless communications link such as the USSD or SMS. The downloaded tone data is uniquely associated with a selected telephone number within the mobile telephone unit (20) such that a call to the mobile unit (20) involving the telephone number initiates audio play back of the tone data.