Talk Telecom China
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- Billing system of own development
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.
Tritema SA
International Voip DIDs, wholesale, outbound routes, very low prices for bulk purchase for providers. Contact for a quote
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