from SC 13D
1 page
<page> Exhibit 1 Joint Filing Agreement We, the Signatories of the Statement on Schedule 13d to Which This Agreement Is Attached, Hereby Agree That Such Statement Is, and Any Amendments Thereto Filed by Any of US Will Be, Filed on Behalf of Each of US. Ici Ventures LLC By: Kkr 1996 Fund L.P., Member By: Kkr Associates 1996 L.P., Its General Partner By: Kkr 1996 GP LLC, Its General Partner By: /S/ William J. Janetschek Name: William J. Janetschek Title: Attorney-In-Fact for Henry R. Kravis Kkr 1996 Fund L.P. By: Kkr Associates 1996 L.P., Its General Partner By: Kkr 1996 GP LLC, Its General Partner By: /S/ William J. Janetschek Name: William J. Janetschek Title: Attorney-In-Fact for Henry R. Kravis Kkr Partners II, L.P. By: Kkr Associates (Strata) L.P., Its General Partner By: Strata LLC, General Partner By: /S/ William J. Janetschek Name: William J. Janetschek Title: Attorney-In-Fact for Henry R. Kravis <page> Kkr Associates 1996 L.P. By: Kkr 1996 GP LLC, Its General Partner By: /S/ William J. Janetschek Name: William J. Janetschek Title: Attorney-In-Fact for Henry R. Kravis Kkr Associates (Strata) L.P. By: Strata LLC, Its General Partner By: /S/ William J. Janetschek Name: William J. Janetschek Title: Attorney-In-Fact for Henry R. Kravis Kkr 1996 GP LLC By: /S/ William J. Janetschek Name: William J. Janetschek Title: Attorney-In-Fact for Henry R. Kravis Strata LLC By: /S/ William J. Janetschek Name: William J. Janetschek Title: Attorney-In-Fact for Henry R. Kravis Dated: February 25, 2000
