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SK Telecom Selects Juniper Networks IP Mobile Backbone to Deliver First Wireless Voice over IP Services in Korea

M-series Routers Enable Korea's Leading Mobile Operator to Offer Intelligent IP Voice and Data Services

Sunnyvale, CA - September 30, 2002 - Juniper Networks, Inc. (Nasdaq: JNPR), a leading provider of trusted infrastructures for the New Public Network, today announced that SK Telecom, the leading mobile operator in Korea, has selected Juniper Networks M-series routers to ensure the delivery of leading-edge Voice over Internet Protocol (VoIP) services to more than 17 million mobile customers throughout the country.

SK Telecom is the first mobile operator in Korea to deliver wireless voice services using packet-based technologies on a 3GPP2 (Third Generation Partnership Program 2) standards-compliant CDMA (Code Division Multiple Access) 2000 network. The Juniper Networks M20 Routers were selected to build a stable foundation for next-generation IP/MPLS-based voice network infrastructure for SK Telecom's "Wireless Office Service." The M20 routers enable SK Telecom to offer wireless VoIP services and other value-add data services, such as high-speed Internet access over the same IP-based infrastructure. The Class of Service (CoS) features in the M20 routers prioritize bandwidth for VoIP packets by assigning traffic flows to different service levels. The Juniper Networks M20 routers have been installed in the densely populated South Korean cities of Seoul, Daegu, Pusan, DaeJeon, and KwangJu.

"Product reliability and scalability are two very important requirements for building a carrier-grade IP infrastructure," said Sang Chul Ha, manager, Core Network Engineering Team, SK Telecom. "The Juniper Networks M-series routers with JUNOS Software and custom-built ASIC technology will help lower our total cost of ownership by enabling us to deliver the high-quality services, such as VoIP, that our customers require."

"As the leading mobile operator in Korea, SK Telecom's commitment to IP will enable the company to offer additional value-added IP services to its customers," said Adam Judd, vice president, Asia Pacific Sales, Juniper Networks, Inc. "This deployment is continued validation that the Juniper Networks IP mobile backbone solution provides a proven and stable foundation for mobile operators to launch their new, innovative wireless applications."

The 3GPP2 core network solution chosen by SK Telecom complements the solutions offered by Juniper Networks to 3GPP operators.

About SK Telecom

SK Telecom is Korea's leading provider of information and communications services spanning Mobile Services, E-Commerce, Overseas Operations and Subsidiaries. SK Telecom's SPEED 011, Korea's leading cellular service brand, Nate wireless Internet service and multimedia service, which offers VOD (Video On Demand) and AOD (Audio On Demand) for CDMA 2000 mobile phone users, are providing unrestricted access to communication anytime, and anyplace. SK Telecom already has established a presence in China, Northeast Asia and Southeast Asia. The company, which has extensive experience and technology related to first-generation analogue and second-generation CDMA wireless communications, is leading the race to develop the third-generation IMT-2000 system and services. For details, please visit www.sktelecom.com.

About Juniper Networks, Inc.

Juniper Networks leads the industry in turning network innovation into the reliable delivery of core, edge, mobile and cable Internet services at scale for the New Public Network. Headquartered in Sunnyvale, California, Juniper Networks offers additional information on its product and service offerings at www.juniper.net.

Juniper Networks is registered in the U.S. Patent and Trademark Office and in other countries as a trademark of Juniper Networks, Inc. Broadband Cable Processor, ERX, ESP, G1, G10, G-series, Internet Processor, JUNOS, JUNOScript, M5, M10, M20, M40, M40e, M160, M-series, NMC-RX, SDX, ServiceGuard, T320, T640, T-series, UMC, and Unison are trademarks of Juniper Networks, Inc. All other trademarks, service marks, registered trademarks, or registered service marks are the property of their respective owners.