Invention Grant
US07839995B2 Change to playback characteristic of ringback tone 有权
更改回铃音的播放特性

Change to playback characteristic of ringback tone
Abstract:
A playback characteristic of a ringback tone, played to a calling communication device employed by a user for a call to a called communication device, is changed based on input from the user of the calling communication device.
Public/Granted literature
Information query
Patent Agency Ranking
0/0