Problems such as how to notify multiple subscribers of physical device events, managed-data update events, and other telephony-related events were solved by applying this pattern.
应用这一模式，可以解决诸如如何将物理设备事件、托管数据更新事件和其他语音相关事件通知给多个订阅者等问题。
Problems such as how to notify multiple subscribers of physical device events, managed-data update events, and other telephony-related events were solved by applying this pattern.
应用这一模式，可以解决诸如如何将物理设备事件、托管数据更新事件和其他语音相关事件通知给多个订阅者等问题。
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