Excelsus Z-420UKP2J Dynamic Filter from Pulse Improves Performance for DSL Users in the United Kingdom.

Business Editors/High-Tech Writers

SAN DIEGO--(BUSINESS WIRE)--May 5, 2004

Enables Caller Line Identification and a Clear Signal Even with

Four or More Phone Jacks

Pulse, a Technitrol (NYSE:TNL) Company, introduces the Excelsus(R) Z-BLOCKER(R) Z-420UKP2J dynamic customer premises equipment (CPE) filter to improve digital subscriber line (DSL) broadband services in the United Kingdom. Approved for use on the British Telecom network, this unique, patented filter provides the highest possible voice quality and data rates for DSL broadband subscribers using four or more filters on the same phone line.

The Z-420UKP2J dynamically activates only when the phone is in use, minimizing capacitance. While capacitance can prevent Caller Line Identification (CLI) from functioning after several filters are installed, the Z-420UKP2J keeps CLI working with up to ten filters installed. These filters also effectively block radio-frequency (RF) interference from cordless phones and other wireless sources, enabling uninterrupted video/audio streaming and games.

"With conventional DSL phone filters, each additional filter degrades voice quality, CLI performance, asymmetric digital subscriber line (ADSL) data rates, and other services," explained Millard Schewe, marketing manager of the Excelsus product group. "The Z-420UKP2J eliminates interference between ADSL and plain old telephone service (POTS), allows a clear signal, and enables CLI when you have multiple filters. I know of no other device that gives DSL subscribers such high performance with more than four filters."

The Z-420UKP2J can be mixed and matched with up to four conventional, non-dynamic filters. There is no need to replace the original filters. It can also be used when fewer than four phone jacks are in use. Up to ten Z-420UKP2J filters can be connected to one line with no noticeable performance degradation. The dynamic filters meet British Telecom requirements per SIN 346 Issue 2.4 (November 2003) as well as ITU-T G.992.1 and G.992.2.

The Z-420UKP2J filter is designed to be installed into every telephone jack in the DSL subscriber's premises that contains voice-band equipment devices, including corded/cordless telephones, answering machines, fax machines, 56Kb/s and lower-rate modems, automatic dialers and recorder connectors. A DSL convenience jack is provided for connecting a DSL modem or home phone line network (HPN) device. This means both a phone device and a DSL modem can be connected to a single phone jack, enabling easy broadband access.

Excelsus DSL filters and splitters incorporate unique, industry-leading Z-BLOCKER technology that demonstrates high performance voice and data characteristics with regard to insertion loss, return loss, and stop-band isolation. In addition, the technology allows utilization of manufacturing techniques that ensure low cost and high performance.

To request more information or details, customers in Europe and the Middle East should contact Steve Bryant, director of European sales, at +353.98.21943 or e-mail [e-mail]. Customers can also contact the Excelsus Sales Department in North America at 760.476.1511 for additional information.

About Pulse and Excelsus

With headquarters in San Diego, Pulse, a Technitrol (NYSE:TNL) Company, is one of the largest magnetic component manufacturers in the world. Under the Excelsus brand name, Pulse markets high quality DSL filters and accessories for broadband Internet access over conventional telephone lines. Excelsus offers a wide selection of economical filters for line configurations in many countries, all with easy, do-it-yourself installation. For more information about the Excelsus line of products, visit www.excelsus-tech.com. Pulse offers an extensive line of custom and standard passive magnetic solutions for OEMs in the data networking, telecommunications, high-speed Internet access, power conversion, military/aerospace, and consumer electronics industries. Pulse is an ISO 9000 registered manufacturer. For more information, visit www.pulseeng.com.

Copyright (C)2004 Pulse Engineering Inc. All rights reserved. All brand names and trademarks are properties of their respective holders.

Cautionary Note: This message contains "forward looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Actual results may differ materially. This release should be read in conjunction with the factors set forth in Technitrol's report on Form 10-Q for the quarter ended March 26, 2004 in Item 2 under the caption "Factors that May Affect Our Future Results (Cautionary Statements for Purposes of the 'Safe Harbor' Provisions of the Private Securities Litigation Reform Act of 1995)."

Z-420UKP2J_HIRES.jpg photo available at www.pulseeng.com/News/media_gallery.cfm.