American Express Information Services Co is to put its FDR Interactive Technologies business into a joint venture company equally owned with AT&T Co. The new Call Interactive company will be aimed at the growing market for handling enormous volumes of telephone calls in a very short time – used by television game shows seeking audience response, and businesses offering direct sales, market research, and competitions. Starting in September, Call Interactive will be able to process up to 10,000 calls in 90 seconds using AT&T MultiQuest High Capacity Service – if the Federal Communications Commission gives the nod. The call processing capacity will be raised as demand increases.