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.
First VoIP was officially formed to formalize the five year long co-operation of a group of IT consultants and companies with a total combined IT experience of over 50 years to provide a complete Internet based telecommunication services to a global marke
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