ADVISORY/Spirent Communications to Present in Panel at Fall VON Conference; Gordon Beith, Director Voice Product Marketing to Address ``Hearing the difference with VoIP''.

Business Editors/High-Tech Writers

ADVISORY...for Thursday (Sept. 25)

Fall VON 2003

--(BUSINESS WIRE)

Spirent Communications:

WHO:         Spirent Communications, a worldwide provider of
             integrated performance analysis and service assurance
             systems for next-generation network technologies.
             Spirent's solutions accelerate the profitable development
             and deployment of network equipment and services by
             emulating real-world conditions in the lab and assuring
             end-to-end performance of large-scale networks.

WHAT:        "Hearing" the difference with VoIP
             Gordon Beith will participate in the panel discussion -
             "Hearing" the difference with VoIP. As his part of the
             panel, Mr. Beith will discuss voice quality measurement
             technology addressing various approaches of end-to-end
             QoV (quality of voice) measurements.

WHEN:        Thursday, September 25th, 12:15 p.m.

WHERE:       Hynes Convention Center, Boston, MA

CONTACT:     For more information please contact Cathi Lane, Director
             Public Relations, Spirent Communications, 818-676-2364.
             [e-mail]