国际电信联盟V系列： 电话网上的数据通信与其他网络互通支持IP网上话音频带数据

国际电信联盟V系列： 电话网上的数据通信与其他网络互通支持IP网上话音频带数据

36 Pages · 2005 · 567 KB · Chinese
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“ Almost everything will work again if you unplug it for a few minutes, including you. ” ― Anne Lamott
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