In telecommunications the automatic call-back is a computer telephone function which allows the user by the engaged addressee’s line or in the other case of the subscriber’s inaccessibility indicating the system to save the number of the called subscriber and make the call when the line will be available or when the called number is not engaged.
With a view to the trend for the Internet to converge data, voice and video, VuTek Inc. is established. Now, over 10 years experience, we saw the convergence is getting solid and rich, and this trend is obviously setting up and is changing our daily life.
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