BULL and ISOCOR Announce Turnkey Solution for Internet Service Provider and Telco Markets; New Partnership to Provide Total Scalable Solution.

SANTA MONICA, Calif.--(BUSINESS WIRE)--Oct. 7, 1999--

ISOCOR (Nasdaq:ICOR) a leading supplier of Internet messaging, directory and meta-directory software solutions and Bull Ingenierie Telecommunications, a division of Bull Europe's Service Integration Division, today announced they have joined forces to provide a total turnkey and integrated Internet Service Provider (ISP) and telecommunications solution.

The total turnkey solution incorporates messaging, directory server and Internet links allowing customers to benefit from centralized information that can be accessed and updated quickly and accurately from a single source.

The explosion of Internet traffic and a focus on customer-oriented services has encouraged Telcos and ISPs to offer an increasingly broad range of Internet messaging services. This integrated solution is designed to provide customers with all the components of a high quality Internet messaging service from a single supplier, incorporating ISOCOR's existing proven products, together with Bull's expertise in integration of information systems infrastructures and its know how in delivering large projects.

"The demand for a total turnkey solution that can offer ISPs everything from portals and billing to unified messaging has been growing, especially with the rise of eCommerce," said Eric Eteve, Director of Bull Ingenierie Telecommunications. "Teaming with ISOCOR means that we can work together in our specialist fields to supply complementary components that have been proven in their individual areas. Our joint solution has been put together with ISPs in mind. We are confident that it is best of breed, offering customers scalability and high-performance."

"ISOCOR's new partnership with Bull, Europe's largest system integrator for the ISP / telco markets, will make ISOCOR's products and services more readily available to ISPs and telcos in the 100 countries served by Bull," said Paul Gigg, President and CEO, ISOCOR. "Bull's choice of ISOCOR as its source of messaging, directory and meta-directory solutions represents a major step forward in our penetration of the ISP market."

The total solution addresses three specific sectors of the ISP/telco market:

-- For small ISPs (below 10,000 users) -- addressed by a shrink

wrapped solution that incorporates portals, billing, directory,

security and statistic management, HTTP mailboxes and

Point-of-Presence (POP) 3

-- Medium size/vertical ISPs (between 100,000-500,000 users) --

addressed specialized ISPs, cable operators or vertical ISPs

catering for a specific community (e.g. the music industry)

-- Large telcos (over 1 million mailboxes) -- offering a complete

solution including unified messaging arena

The ISOCOR offering includes the following products: N-PLEX messaging server; WebExpress; Global Directory Server (GDS) and MetaConnect.

Open Standards Lower the Total Cost of Ownership

An open standards-based solution that combines low-cost Internet directory and messaging capabilities with highly-manageable servers can lower the total cost of ownership when compared to proprietary systems. As the Internet messaging and directory standards continue to evolve, and as businesses grow, merge and consolidate, forcing the integration of multiple heterogeneous host and server environments, vendor support for all open standards assumes increasingly greater importance to IT decision-makers.

All ISOCOR products support open standards.

-- WebExpress provides Web-based messaging and directory access,

which enables users to retrieve email, access corporate directory

information and manage their address books from most devices or

platforms with a Web interface.

-- N-PLEX is an Internet messaging server designed to handle

large-scale, high-volume messaging requirements. Capable of

handling millions of users, N-PLEX is designed to address the

high availability and performance requirements of carrier grade

customers with integrated standards-based directory services, and

comprehensive management facilities.

More than 3.4 trillion e-mail messages crossed the Internet in

the US in 1998. About two thirds of those messages were

unsolicited commercial messages. Commonly known as 'spamming,'

unwanted emails continue to clog the Internet at an alarming

rate. With N-PLEX, commercial ISPs offer their users the

convenience of automatically filtering out unsolicited messages.

-- MetaConnect unifies existing corporate data from dissimilar

databases, applications and directories into one 'meta-directory'

that can be centrally managed as a unified resource across the

enterprise. The ability to centrally manage dissimilar corporate

data greatly enhances intranet, Internet and e-commerce

functionality by giving corporations accurate, up-to-date

information on their customers, products, trading partners and

employees while substantially reducing data management costs.

-- ISOCOR's Global Directory Server (GDS) is a high-performance,

open-ended Internet directory supporting the LDAP V3 and industry

standards. It is designed specifically to meet the needs of large

Telcos and ISPs and can reduce the cost of deployment through

high-performance and scalability by delivering millisecond 

response time to hundreds of queries per second on databases with

millions of entries. In addition, its level of performance means

it can be used as a repository for the storage of PKI 

certificates as well as strong user information. GDS can thus act

as an authentication server by automatically verifying users'

attempts to access corporate data based on access checklists,

which can be updated in real time to reflect changes occurring in

the company. The high-level performance of GDS also means

thousands of users and applications can access data

simultaneously.

Web Access

Further details on ISOCOR world-class messaging and directory solutions may be found at www.isocor.com. Additional information on Bull can be found at www.bull.com.

NOTE TO EDITORS

Bull is an international IT group that delivers secure solutions for the enterprise and its customers. Bull's business portfolio is focused in three domains key for Internet Computing: enterprise-class servers -- GCOS, Unix, NT --; full-life cycle IT services; and advanced technologies including Smart Cards and Software for system and network management and Internet security.

Bull operates in more than 100 countries. In 1998, Bull earned revenues of 3.8 billion Euros with over 65% outside of France. Visit our site : www.bull.com

Bull Ingenierie Telecommunications

Bull Ingenierie Telecommunications (BIT), which is the French telecommunications sector-orientated branch of Bull Europe's Service Integration Division, groups together all the Bull Group engineering and systems integration teams in France that work in the telecommunications sector and the field of large, value-added networks.

BIT has a strong reputation in the telecommunications sector, and expects to use this alliance to strengthen its position with Internet access and service providers. The new solution will permit BIT to broaden its range of value added services and solutions for Internet, i.e. data exchange and messaging systems, Internet and smart networks. BIT is also skilled in other technologies in the telecoms sector, with recognized expertise in the customer relations field, providing call center, help desk and invoicing services, and in Infrastructure, with expertise in TMN, voice services and telematics (Minitel), network security and ebusiness.

ISOCOR

ISOCOR (www.isocor.com) is a leading provider of world-class Internet software, supplying high-quality, high-performance software designed to handle an organization's messaging and directory requirements. ISOCOR also develops and markets "Value Added Services Platforms" for the mobile communications industry. ISOCOR customers represent Fortune 1000 companies and service providers in the manufacturing, telecommunications, financial, government, health care, entertainment and other markets around the world. Customers include Texas Instruments, Worldcom Advanced Network Services and New York Life, among others.

Headquartered in California, USA, ISOCOR is a global organization with major development centers in Santa Monica, Dublin and Berlin. ISOCOR has sales/support offices in the U.S. and in key international business centers including London, Paris, Torino, Berlin and Bern.

Except for the historical information, the matters discussed in this document are forward-looking statements that are subject to certain risks and uncertainties that could cause actual results to differ materially from those projected. Such factors include the impact of competitive announcements and products, the rate of growth of the markets in which the Company competes, the effect and rate of change in standards and platforms for messaging products, the risks associated with the year 2000, as well as the risk factors listed from time to time in the Company's U.S. Securities and Exchange Commission (SEC) reports, including but not limited to the report on Form 10-K for the year ended December 31, 1998, and/or Form 10-Q for the quarters ended in 1999, copies of which are available from ISOCOR's Investor Relations Department or through the Electronic Data Gathering Analysis and Retrieval system (EDGAR) at www.sec.gov. The Company assumes no obligation to update the forward-looking statements included in this document. ISOCOR, N-PLEX Global is a registered trademarks of ISOCOR. All other trademarks and registered trademarks are the property of their respective holders.