PCTEL's CLARIFY(R) System Adopted by Telefonica in Mexico; Improving Network Performance and Engineering Efficiency

"Telefonica has an aggressive growth strategy in Mexico," remarkedJose Luis Santillan, the operator's Assistant Director of Engineering,"and we have chosen CLARIFY to be an integral part of networkdeployment and performance optimization. We also expect that CLARIFYwill be a valuable tool in the evolution of our 3G network." OmarCalvo, Telefonica's Manager of RF Engineering and Network Planning,added, "Containing signal propagation is essential to managing GSMgrowth and preparing for WCDMA deployment. CLARIFY is helping usdiscover and resolve the unexpected propagation effects andservice-affecting interference that undermine the performance of bothtechnologies."

"We are delighted that Telefonica Moviles in Mexico and severalother Telefonica subsidiaries around the world have chosen CLARIFY fortheir network optimization efforts," said Larry Sakayama, GeneralManager of PCTEL's RF Solutions Group, "and we are confident that thissolution will address Telefonica's most pressing challenges, today andas their networks expand."

With its high dynamic range and distinctive ability to identifyand locate interference sources, CLARIFY sets the industry standardfor interference management in cellular networks. The CLARIFY solutionprovides unparalleled visibility into network propagation andsimplifies interference problem solving without requiring serviceinterruptions, after-hours driving, or the use of test transmitters.CLARIFY measurement data are essential inputs to network optimization,frequency planning, and cell planning. Its simultaneous dual-modescanning capability enables operators to manage hybrid WCDMA/GSMnetworks, optimizing RF performance while controlling infrastructureinvestment. The CLARIFY product line includes a data collection systemas well as an analysis platform, and it is available globally.

About Telefonica Moviles

Telefonica Moviles (http://www.telefonica.com.mx), a subsidiary ofTelefonica S.A. (NYSE:TEF) (http://www.telefonica.es), is one of theworld's leading mobile telephony companies. It is a market leader inSpain and Latin America and also has operations in the MediterraneanBasin. In September of 2005, Telefonica Moviles had more than 90million customers, gaining presence in all key Latin American marketsand a position of leadership in the region. These operations makeTelefonica Moviles the fourth largest mobile operator in the world. InMexico, Telefonica Moviles offers its wireless services under thebrand name movistar.

About PCTEL

PCTEL, Inc. (Nasdaq:PCTI), which is headquartered in Chicago, is aglobal leader in wireless broadband solutions. PCTEL's AntennaProducts Group (http://antenna.pctel.com) designs, distributes, andsupports innovative antenna solutions for public safety applications,unlicensed and licensed wireless broadband, fleet management, networktiming, and other GPS applications. PCTEL's Mobility Solutions'(http://mobilitysolutions.pctel.com) software tools provide secure,access independent, remote connectivity to the Internet and VoIPcapability for converged handsets. PCTEL's RF Solutions'(http://rfsolutions.pctel.com) portfolio of OEM receivers, receiverbased products and interference management solutions are used tomeasure, monitor and optimize cellular networks.

PCTEL protects its leadership position with a portfolio of morethan 130 analog and broadband communications, wireless and antennapatents, issued or pending. The company's products are sold orlicensed to wireless carriers, wireless ISPs, distributors, systemintegrators, wireless test and measurement companies, wireless networkequipment and handset manufacturers, PC card manufacturers andgovernment agencies. For more information, please visit the company'sweb site at: http://www.pctel.com.