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.
Trisun Communications is a leading international carrier and provider of wholesale services to carriers and resellers throughout the world. Our network bridges the horizons between traditional circuit based communications to the next generation `Voice ove
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