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.
A-Z Wholesale VoIP Termination
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Having interconnections with up to 100 tier 1 carriers and national telecoms, we provide our customers with the best VoIP services available at competitive