(19)

(11)

EP 0 990 329 A1

(12)

(43) Date of publication: 05.04.2000 Bulletin 2000/14 (21) Application number: 98931440.6 (22) Date of filing: 19.06.1998

(51) International Patent Classification (IPC)7: H04L 12/28, H04Q 7/20 (86) International application number: PCT/US9812/888 (87) International publication number: WO 9858/477 (23.12.1998 Gazette 1998/51)

(84) Designated Contracting States: AT CH DE ES GB LI LU PT SE (30) Priority: 19.06.1997 US 50252 P (71) Applicant: Winstar Communications, Inc. New York, NY 10169 (US)	(72) Inventor: ZENDLE, Allan, M. Oakton, VA 22124 (US) (74) Representative: Olsson, Jan et al Bjerkéns Patentbyra KBP.O.Box 1274 801 37 Gävle 801 37 Gävle (SE)