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Tatiana Vishnevskaya is the Head of Carrier Relations Unit at Astelit, with expertise in interconnect with national and international carriers. Tatiana has also worked at MTS Group as a Leading Expert in the Carrier Relations Department and at VELTON.TELECOM LLC as the Unit Head in the Carrier Relations Department. With a background in investment management and English and foreign literature, Tatiana is a revenue assurance expert with a focus on interconnection cost calculation.