Touchtone Technologies, Inc. (TTI) TTI has been providing carrier services, technology design, alternate billing and domestic and international traffic aggregation in North America since 1998. TTI is the only provider in the industry with tier one agreements for reverse charge and operator convenience calls. TTI had the distinction of being recognized as one of MCI-Verizon’s “Top Business Partners” This recognition and market positioning results from TTI’s level of expertise and commitment to identifying new routing configurations when no other options are available. TTI’s Alternate Billing Services is used by a number of Operator Services Providers and Clec’s in North America. This is a complete solution allowing for the maximum compensation while providing the most comprehensive service available.