(19)

(11)

EP 0 279 817 A1

(12)

(43) Date of publication: 31.08.1988 Bulletin 1988/35 (21) Application number: 87903904.0 (22) Date of filing: 15.06.1987

(51) International Patent Classification (IPC):  H04W 84/ 02( . ) H04W 84/ 04( . ) (86) International application number: PCT/IT1987/000060 (87) International publication number: WO 1988/001466 (25.02.1988 Gazette 1988/05)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 12.08.1986 IT 19860086210 (71) Applicant: CARTIA, Luigi I-00197 Roma (IT)	(72) Inventor: CARTIA, Luigi I-00197 Roma (IT) (74) Representative: ISABELLA VALENZI, Luigi  Largo Arenula, 11 Roma Roma (IT)