telephone calling, telephone answering and telephone marketing services consisting of taking catalog or 800-number orders, processing credit card payments and warehousing and shipment of product, registering attendees to client programs, qualifying dealers for carrying a product, product announcements, products promotions, locating dealers, customer service, technical support, custom design of telephony support, overflow and extended hour service, product sales, market research surveys, new product introductions, and outside support for client's inside sales organization