ADVISORY/Centrinity Inc. Third Quarter Results Conference Call: Tuesday, August 22, 2000 -- 11:00 A.M. EST.

Business Editors

ADVISORY . . . for Tuesday, August 22, 2000

TORONTO--(BUSINESS WIRE)--Aug. 17, 2000

On Tuesday, August 22, 2000, Centrinity (TSE:CTI.) will announce its third quarter financial results for the three months ended June 30, 2000.

To accompany the release of this information, we plan to host a conference call to provide updates on operating progress. We hope you can participate.

Here are the details:

News release
 distribution:           8:00 a.m. (eastern) August 22
Call begins:             11:00 a.m. (eastern)
Call-in number:          1.888.674.1998
                         212/993-0240 (outside North America)
Hosts:                   Myles McGovern, President and CEO
                         Rick LePage, EVP and CFO
                         Brian Mitchell, VP, Finance &
                         Administration

A telephone postview service will also be in place from approximately one hour after the conference ends until midnight (eastern) Tuesday, August 29. It can be accessed by calling 800/558-5253 and entering reservation number 1611 6633.

About Centrinity Inc.

Serving over 6 million users at more than 8,000 organizations in 55 countries, Centrinity is a leading designer, marketer and distributor of collaborative and unified communication software to markets worldwide. The Company's products include FirstClass Intranet Server Gold, FirstClass Collaborative Classroom Gold, FirstClass Unified Messaging and Zebu, which are widely used in commercial and education markets. Centrinity Inc. is listed on The Toronto Stock Exchange (TSE:CTI.). Its corporate website is located at www.centrinity.com.