Telefonica Argentina Selects Juniper Networks for National IP Network

Telefonica Argentina Deploys E- and M-series Platforms to Deliver High-Quality, Value-Added Broadband Services Throughout Argentina

SUNNYVALE, Calif., October 19, 2006 — Juniper Networks, Inc. (NASDAQ: JNPR) today announced that one of Argentina’s largest telecommunications service providers, Telefonica Argentina, has deployed the E- and M-series routing platforms in its new IP backbone and access networks. The platforms will allow the company to offer high-quality, value-added services to business and residential consumers throughout Argentina.

“I am pleased to announce that Telefonica Argentina has chosen Juniper Networks technology for this phase of our backbone and access network expansion,” said Ernesto Castaño, Director of Network Planning, Telefonica Argentina. “One of the key challenges we faced was providing a rich suite of services to our customers with an easy-to-use interface. This new solution means Telefonica Argentina’s customers will enjoy reliable, high-performance IP services.”

Telefonica Argentina, a subsidiary of Spain’s Telefonica Group, selected the E- and M-series to strengthen their position in the market by building a strong portfolio of value-added services for their customers. The unique per-service and per-subscriber Quality of Service functionality on the E- and M-series will enable Telefonica to introduce a range of new services, each with the appropriate service metrics—driving the revenue and service growth that is key to the company’s ongoing success.

Juniper Networks E-series Broadband Services Routers and M-series multiservice routing platforms together deliver a comprehensive portfolio of advanced features that uniquely combines best-in-class IP/MPLS capabilities with unmatched reliability, security and performance. Both platforms are deployed in the world’s largest networks and consistently support a wide range of advanced service offerings, including video on demand, VoIP and online gaming.

“A key player in the Argentine telecommunications market, Telefonica Argentina has chosen Juniper Networks to expand its IP infrastructure because they enable new revenue-generating services while delivering industry-leading performance and reliability,” said Tim Lambie, vice president, Americas International for Juniper Networks. “In an increasingly competitive market, Juniper Networks infrastructure gives growing service providers like Telefonica Argentina a competitive edge by providing an open, customized and agile infrastructure that can rapidly accommodate new and changing service requirements.”
About Telefonica

Telefonica is one of the largest telecommunications companies in the world in terms of market capitalization. Its activities are centered mainly on the fixed and mobile telephony businesses with broadband as the key toll for the development of both. The company has a significant presence in 19 countries and a customer base that amounts to more than 186 million accesses around the world. Telefonica has a strong presence in Latin America, where the company focuses an important part of its growth strategy. Telefonica is a 100% listed company, with more than 1.5 million direct shareholders.
About Juniper Networks, Inc.

Juniper Networks develops purpose-built, high performance IP platforms that enable customers to support a wide variety of services and applications at scale. Service providers, enterprises, governments and research and education institutions rely on Juniper to deliver a portfolio of proven networking, security and application acceleration solutions that solve highly complex, fast-changing problems in the world’s most demanding networks. Additional information can be found at www.juniper.net.

Juniper Networks and the Juniper Networks logo are registered trademarks of Juniper Networks, Inc. in the United States and other countries. All other trademarks, service marks, registered trademarks, or registered service marks are the property of their respective owners.

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Brendan Hayes

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Juniper Networks, Inc.

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