Agere Systems to Host Webcast on First Quarter Fiscal 2005 Results ALLENTOWN, Pa., Jan. 17 /PRNewswire-FirstCall/ -- Agere Systems (NYSE:AGR.ANYSE:AGR.B) today announced it will host a webcast on Tuesday, January 25, 2005, to discuss its financial results for the first quarter of fiscal 2005, ended December 31, 2004. The company invites investors and others to listen to the earnings conference call live over the Internet at 8:30 a.m. EST. (Logo: http://www.newscom.com/cgi-bin/prnh/20040618/AGERELOGO ) What: Agere Systems First Quarter Fiscal 2005 Earnings Announcement When: Tuesday, January 25, 2005, 8:30 a.m. EST Where: http://www.agere.com/webcast How: Log on to the web at the address above, and click on the audio link. Subsequent to the conference call, the webcast will be available on the Agere web site at http://www.agere.com/webcast. Agere Systems is a global leader in semiconductors for storage, wireless data, and public and enterprise networks. The company's chips and software power a broad range of computing and communications applications, from cell phones, PCs, PDAs, hard disk drives and gaming devices to the world's most sophisticated wireless and wireline networks. Agere's customers include top manufacturers of consumer electronics, communications and computing equipment. Agere's products connect people to information and entertainment at home, at work and on the road -- enabling the connected lifestyle. http://www.newscom.com/cgi-bin/prnh/20040618/AGERELOGO http://photoarchive.ap.org/ DATASOURCE: Agere Systems CONTACT: Media Inquiries: JoAnna Schooler, +1-610-712-1746 (office), +1-908-283-4060 (cell), , or Investor Inquiries: Sujal Shah, +1-610-712-5471 (office), , both of Agere Systems Web site: http://www.agere.com/ http://www.agere.com/webcast

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