CBIS and TMN -- Portugal -- Sign CBIS Advantage Contract.

LISBON, Portugal--(BUSINESS WIRE)--Dec. 18, 1997--CBIS(R) and TMN -- Telecomunicacoes Moveis Nacionais -- a subsidiary of Portugal Telecom, have signed a five-year contract for the CBIS Advantage(R) customer care and billing solution. TMN will use CBIS Advantage to support its consumer and corporate accounts and to facilitate its new strategy and marketing approach in preparation for increased competition.

According to Iriarte Esteves, TMN CEO, "This agreement is a very important step in the accomplishment of TMN's main objectives toward improvement of our standards of service to our customers. We want to enhance our capabilities for answering market needs and that is the reason we think this new system will prove to be an essential tool to our company."

"The robust CBIS Advantage subscriber management and billing system is part of CBIS's comprehensive solution set that brings the benefits of our broad experience and the capabilities of our industry knowledge to the international GSM market," said Robert J. Marino, president and CEO of CBIS. "These solutions add value to our clients by enabling them to effectively identify customers with the greatest revenue potential, to efficiently acquire these customers, to provide world-class customer service and maximize customer satisfaction, and to help grow their revenues, profits, and market share."

CBIS Advantage is a new-generation, real-time solution set for wireless billing and administration developed specifically to meet the needs of GSM and international analogue network operators and service providers. It features system flexibility, quick responses to market demands, facilitated pricing, service, and marketing plan implementation, the ability to develop payment, collection, and dunning processes to fight fraud and churn.

TMN will use CBIS Advantage to achieve its strategy of maximizing its relationship with Portugal Telecom (PT) to offer bundled services such as wireline, wireless, cable, paging, pre-paid SIM, etc., as soon as the market is fully deregulated in Portugal.

ABOUT TMN _________

TMN, a subsidiary of Portugal Telecom, was established in March, 1991, as the first company to supply the mobile communications service in Portugal. In October, 1992, it also became one of the first suppliers of this service in Europe.

According to TMN, the company has a 50 percent market share in Portugal, corresponding to almost 600,000 customers at the end of the third quarter.

According to TMN, as of September, 1997, the company significantly improved its results with net profits of $47 million, a 140 percent increase when compared to the same period in 1996. The company expects to achieve (by the end of 1997) net profits between $62 and $68 million. In 1996, the turnover was higher than $230 million. The investment in telecommunications infrastructure that was higher than $50 million in 1996 will be around $90 million in 1997.

ABOUT CBIS __________

CBIS is the global leader in the provision and management of customer support and billing solutions for the communications industry. Our solutions perform mission-critical activities for our clients, enabling them to compete and differentiate themselves more effectively in the broad range of wireless, wireline, cable TV, Internet, and emerging communications services.

Our experience, knowledge, and scale, as well as our client support, make us an industry leader. Working in our data center hubs and in client installations around the world, our customer care and billing solutions produce more than 300 million bills each year.

CBIS is a Cincinnati Bell company -- an Equal Employment Opportunity/Affirmative Action Employer committed to a diverse work force. We're on the web at http://www.cbis.com

Cincinnati Bell Inc. (NYSE:CSN) is a $1.6 billion corporation which supplies telecommunications, information management, and marketing services. Other subsidiaries include Cincinnati Bell Telephone, a major, independent telephone company, and MATRIXX Marketing, the world's largest provider of telephone marketing services. -0-

CBIS is a registered service mark and CBIS Advantage is a registered trademark of Cincinnati Bell Information Systems Inc.

CONTACT: CBIS

John Pratt, 800/327-3900 or 513/397-7777

In the UK, freephone, 0800.895.185

E-mail: jpratt(at sign)cinbell.com