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| 電話使用者介面 (An interface that is used to navigate the menus of a Unified Messaging (UM) system using DTMF or touchtone inputs) | |||
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| 电话用户接口 | |||
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| 電話使用者介面 (An interface that is used to navigate the menus of a Unified Messaging (UM) system using DTMF or touchtone inputs) | |||
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| 电话用户接口 | |||
