Castelle Certified as CMP Channel Advocate Member; CMP Channel Group Membership Demonstrates Commitment to Strengthening and Building Channel Relationships.

SANTA CLARA, Calif.--(BUSINESS WIRE)--March 16, 1999---Castelle (Nasdaq:CSTL) announced today that the Channel Group of CMP Media Inc., has certified Castelle as a Channel Advocate member.

Castelle is currently the only company dedicated specifically to fax-server technology in the CMP Channel Group's Channel Advocate Program. With the recent roll-out of Castelle's Global Partner Program(See note A), the CMP Channel Advocate membership reinforces Castelle's commitment to build profitable relationships with the reseller fax community.

VARs interested in joining a strong reseller fax program will benefit from learning that Castelle's products and services are dedicated to network and Internet fax technology. For more information, see http://www.channeladvocate.com.

Castelle's Global Partner Program brings together existing value-added resellers (VARs) from recent Castelle acquisitions and combines them into one integrated organization. The Global Partner Program offers its members new marketing and sales benefits, pre-sales support, technical training, as well as trade-in, add-on, and support agreement discounts.

The Global Partner Program is designed to help Castelle resellers improve sales and business relationships. VARs can benefit from additional revenue, sales leads, software development application tools and the opportunity to earn marketing support funds. VARs can purchase Castelle products through major distributors which include Ingram Micro, Tech Data and Merisel.

VARs who sign for the Global Partner Program before March 31st are eligible to purchase a VAR Starter Kit at 50% off as well as FaxPress demo units at 50% off. New applicants can take advantage of applying for the Global Partner Program through the castelle.com Web site at: http://www.castelle.com/partners/VARapplication.htm or call 800/289-7555 or 408/496-0474, ext. 422.

"Castelle has earned their right to become a Channel Advocate member and we welcome them into our program," said Patricia Rush, Channel Advocate Director from CMP Media Inc., in Manhasset New York.

The Channel Advocate Program is a value-added service of the Channel Group of CMP Media Inc., designed to honor companies that have proven their commitment to the channel. Channel Advocates must sell at least 80% of their product through the channel, they must actively demonstrate a commitment to their partners, they must implement equitable pricing and availability policies and they must institute programs to support their resellers. Today, more than 125 companies are part of the Channel Advocate Group.

As a member of the CMP Channel Group, Castelle's Global Partner Program and products will be listed in current and upcoming ads running in CMP publications. Castelle will also receive a Channel Advocate icon in the Advertisers Index of CMP publications, to demonstrate to readers and end-users that the Global Partner Program is now affiliated with the Channel Advocate Program.

A direct link into the reseller section of castelle.com will also appear on the CMP Channel Group Internet site: http://www.channeladvocate.com.

About CMP Media Inc.

CMP Media Inc. (Nasdaq:CMPX) is the leading high-tech media company providing channel information and marketing services to the entire technology spectrum-the builders, sellers and users of technology worldwide.

With its portfolio of newspapers, magazines, custom publishing, Internet products, research, consulting and conferences, CMP is uniquely positioned to offer marketers comprehensive, integrated solutions tailored to meet their individual needs.

Online editions of the company's print publications, along with products and services created exclusively for the Internet, can be found on CMPnet at http://www.CMPnet.com. NSTL, the company's independent testing lab and consulting organization, serves government, corporate and technology vendor clients around the world.

About Castelle

Founded in 1987, Castelle is an industry leader and pioneer of network fax and print servers that increase productivity in workgroups and the enterprise. Over the past two years the company has acquired Object-Fax, an NT-based enterprise fax server from Traffic Software and the InfoPress family of fax-on-demand and voice response solutions from Ibex Technologies.

These acquisitions strategically complement Castelle's flagship fax server product, FaxPress, and will create a fax product suite that supports centralized or distributed enterprises of all sizes. Castelle products are available through a worldwide network of distributors. Castelle has headquarters in Santa Clara, Calif. and can be reached at 800/289-7555, 408/496-0474 or http://www.castelle.com.

(A) Global Partner Program was officially launched on Jan. 21, 1999.

Castelle and Object-Fax are trademarks or registered trademarks of Castelle. All other products and trademarks are the property of their respective owners.

This release as it relates to revenues and other company matters, contains forward-looking statements, which are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Investors are cautioned that all forward-looking statements involve risks and uncertainties. Investors are directed to the Risk Factors section and other information contained in the company's filings with the Securities and Exchange Commission for a more complete description of the risks and uncertainties relating to the material in this release as well as to other aspects of the company's business.