Excelsus Unveils New ADSL Products for the United Kingdom and Sweden; The Z-420UK and CP-421SE Allow Easy, Do-it- Yourself Installation to Reduce Truck Rolls and Expedite Service Deployment.

Business Editors & High-Tech Writers

SAN DIEGO--(BUSINESS WIRE)--May 7, 2002

Excelsus Technologies Inc., a division of Pulse, a Technitrol company (NYSE:TNL), today announced the availability of an asymmetric digital subscriber line (ADSL) premium dynamic in-line filter for services in the United Kingdom (Model Z-420UK) and an ADSL splitter customized for unique telephone network configurations in Sweden (Model CP-421SE).

The filter and splitter allow for subscriber self-installation -- making it easier, faster and more affordable for customers to experience the benefits of high-speed Internet access.

The Excelsus Z-420UK meets British Telecom's demanding specifications for quality and performance (BT spec SIN #346), while the CP-421SE meets the rigorous requirements of Sweden's Skanova Networks.

Using patent-pending, Z-BLOCKER(R) filter technology, the products block noise and interference between ADSL and analog telephone equipment by isolating voice-band devices and telephone network jacks. They may be used on phone jacks with answering machines, fax machines, modems operating at or below 56Kb per second, automatic dialers and set-top boxes.

The Z-420UK is a small, compact in-line filter that plugs into standard telephone jacks used in the United Kingdom. The CP-421SE simply plugs into the Swedish home's primary telephone jack. Both units provide one port for the phone signal and one port for the ADSL signal.

Small illustrations on these products indicate where to make each connection, making self-installation simple for the subscriber and allowing easy relocation of the computer and DSL modem within the home without a service call.

Technical Information

When a phone device goes off-hook, the dynamic function of the patent-pending Z-420UK adds a small amount of capacitance. When the telephone set is on-hook, the filter exhibits lower capacitance, which provides improved side-tone and return-loss characteristics. This dynamic function allows several filters to be used on a single phone line with no discernible loss in voice quality.

In addition, all Excelsus filters have extremely well-balanced impedance characteristics; they do not reflect noise back onto the ADSL band to impair the ADSL signal.

The CP-421SE is compatible with ITU-T G.992.1 (Full Rate) and G.992.2 (G. Lite), V.90 and Metallic Loop Testing. It meets Skanova Network's Specification No. 304/1056-KDUA 101 110 Rev. D and is designed to meet or exceed most ETSI TR 101 728 V1.1.1 specifications.

About Excelsus Technologies

Excelsus Technologies, an operating unit of Pulse, provides high-quality DSL filters and accessories for broadband Internet access over conventional telephone lines. The company's patented Z-BLOCKER(R) filter technology eliminates line interference and noise to deliver the full potential of DSL.

Excelsus offers a wide selection of economical filters for line configurations in many countries, all with easy, do-it-yourself installation. With its innovative engineering and production capabilities, Excelsus is positioned to serve the millions of DSL users worldwide.

Pulse, a Technitrol company, is one of the world's largest manufacturers of magnetic components. With headquarters in San Diego, the company produces a complete line of passive magnetic components and modules for use in Internet/broadband access, power, telecommunications and datacom applications.

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 29, 2002, 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)."

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