Telecommunications – Radiotelephone system – Special service
Patent
1996-10-29
2000-01-25
Dolinar, Andrew M.
Telecommunications
Radiotelephone system
Special service
455419, 455567, H04Q 722, H04Q 732
Patent
active
060186542
ABSTRACT:
A method and apparatus for downloading tone data from a public land mobile network to a mobile telephone unit is disclosed. A mobile telephone unit includes means enabling the user to request downloading of tone data to the mobile telephone unit from a public land mobile network via a connection-less 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 such that a call to the mobile unit involving the telephone number initiates audio play back of the tone data.
REFERENCES:
patent: 5371781 (1994-12-01), Ardon
patent: 5481599 (1996-01-01), MacAllister et al
Mills Jim
Valentine Eric Lee
Dolinar Andrew M.
Ericsson Inc
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