| 摘要 |
A system for controlling the magnitude or timing of the alert signal (e.g. ringing) generated to notify the user of a portable (e.g. cellular) telephone of an incoming phone call. Data values that indicate the status of the telephone are processed to control the character of the alert signals. These data values may include position data indicating the absolute location of the phone or the relative location of the phone with respect to another object, the level of ambient light or sound in the vicinity of the telephone, the time of day, the movement of the telephone, and/or whether the telephone is being held by the user.
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