(19)

(11)

EP 0 347 410 A1

(12)

(43) Date of publication: 27.12.1989 Bulletin 1989/52 (21) Application number: 87900707.0 (22) Date of filing: 02.01.1987

(51) International Patent Classification (IPC):  H04W 52/ 02( . ) H04W 88/ 02( . ) (86) International application number: PCT/US1987/000005 (87) International publication number: WO 1988/005248 (14.07.1988 Gazette 1988/15)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (71) Applicant: MOTOROLA, INC. Schaumburg, IL 60196 (US)	(72) Inventors: DAVIS, Walter, Lee Coral Springs, FL 33071 (US) LEONARD, Jerome, Charles Lake Worth, FL 33467 (US) (74) Representative: Hudson, Peter David, et al  MOTOROLA European Intellectual Property Operations Jays Close Viables Industrial Estate Basingstoke Hants RG22 4PD Basingstoke Hants RG22 4PD (GB)