| 摘要 |
<p>An apparatus, system, method, and computer program product for providing a flexible ringer for multiple deskset phones (102a, 102b, 102c...). A controller (320) detects a flag message that precedes an incoming telephone call, and selects one or more frequencies based on a local expectation of a ringing telephone at the geographic location, or according to a user preference. A digital signal processor (DSP) generates a digital ringer signal based on the selected frequencies. An audio codec (306) converts the digital ringer signal to an analog ringer signal and sends the analog ringer signal to multiple deskset phones (102a, 102b, 102c) using a receive cable. The analog ringer signal is amplified to drive a speaker (336) that converts the analog ringer signal into an audible ringer sound at each deskset phone (102a, 102b, 102c). The audible ringer sound can be customized for multiple geographic locations by modifying the selected frequencies used in the digital ringer signal. In one embodiment, a user selects the current geographic location from a menu of multiple geographic locations, where each geographic location in the menu is assigned the requisite frequencies to meet the local expectation of a ringing telephone. Alternatively, a user selects from a non-geographic specific list of preselected frequencies typically found useful by users.</p> |
