ATaamp;T a Booth # 625 ATaamp;Ta#39;s booth will feature telemarketing solutions developed for its customers through the consultative services of ATaamp;Ta#39;s nationwide sales force. ... File that lists all U.S. manufacturers with address, phone number, employee size, contact name and annual sales volume. American ... The companya#39;s data base can also be accessed via modem with its on-line service, 24 hours a day.