CATAPULT COMMUNICATIONS® AND TESTING TECHNOLOGIES®
ANNOUNCE JOINT MARKETING AGREEMENT

Testing Technologies TTCN-3 Products to Run on Catapult DCT2000® System

Mountain View, CA – June 12, 2007 – Catapult Communications (NASDAQ: CATT) and Testing Technologies IST GmbH, today announced a joint marketing agreement to deliver TTCN-3 based conformance test suites and development tools to the telecom test market. Under the agreement Catapult and Testing Technologies will collaborate to further integrate Testing Tech’s TTCN-3 products with the DCT2000 test system and to implement a variety of marketing programs.

Conformance test suites for SIP, H.248, SUA, M3UA, SCTP, and IPv6 are immediately available from Testing Tech. In addition, Testing Tech offers a script writing tool called TTworkbench® to speed the development and modification of test scripts for a wide variety of telecom technologies and interfaces. An adapter that allows Testing Tech’s TTCN-3 based test scripts to run on the DCT2000 test system is immediately available from Catapult.

According to Theofanis Vassiliou-Gioles, CEO of Testing Tech, "This marketing agreement recognizes the growing interest in TTCN-3 as a development and test environment for the telecom sector. We look forward to working with Catapult Communications to help telecom companies integrate our portfolio of TTCN-3 products with Catapult’s high performance DCT2000 test system.“

According to David Mayfield, Catapult’s president and COO, “We are pleased to work with the recognized leader in TTCN-3. This collaboration provides our DCT2000 customers access to Testing Tech’s portfolio of TTCN-3 products and to Testing Tech’s support expertise. Our initial focus is on telecom service providers and network equipment manufacturers who are drawn to TTCN-3 as a standards-based approach for testing wireless, IMS, VoIP and traditional SS7 technologies.”

About Catapult Communications
Catapult Communications is a leading supplier of advanced digital telecom test systems to global equipment manufacturers and service providers, including Ericsson, Alcatel-Lucent, Motorola, NEC, NTT DoCoMo, Nortel and Nokia Siemens Networks. The Catapult DCT2000® and MGTS® systems deliver superior high-end test solutions for hundreds of protocols and variants - spanning IMS, WiMAX, 4G/3G/2.5G/2G UMTS, VoIP, GPRS, SS7, Intelligent Network, ATM, ISDN and other network environments.

Catapult is headquartered at 160 South Whisman Road, Mountain View, CA 94041. Tel: 650-960-1025. International offices are located in the U.K., Germany, France, Finland, Sweden, Canada, Japan, China, Australia and India. Information about Catapult Communications can be found on the Web at www.catapult.com.

About Testing Technologies
Testing Technologies designs and markets a huge variety of TTCN-3 based test development tools to specify, implement and run technology-independent test suite platforms.