A number mask is used to define the telephone number format that a Unified Messaging server will use to determine what outgoing telephone number it will dial for a user.是什么意思_A number mask is used to define the telephone number format that a Unified Messaging server will use to determine what outgoing telephone number it will dial for a user.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句