(19)

(11)

EP 0 398 897 A1

(12)

(43) Date of publication: 28.11.1990 Bulletin 1990/48 (21) Application number: 89900595.0 (22) Date of filing: 05.12.1988

(51) International Patent Classification (IPC):  G05F 1/ 56( . ) G05F 3/ 24( . ) (86) International application number: PCT/EP1988/001129 (87) International publication number: WO 1990/006547 (14.06.1990 Gazette 1990/14)

(84) Designated Contracting States: BE CH IT LI (71) Applicants: BELL TELEPHONE MANUFACTURING COMPANY Naamloze Vennootschap B-2018 Antwerp (BE) ALCATEL N.V. NL-1077 XX Amsterdam (NL)	(72) Inventor: HASPESLAGH, Didier, René B-8750 Harelbeke (BE) (74) Representative: Vermeersch, Robert, et al  BELL TELEPHONE MANUFACTURING COMPANY Naamloze Vennootschap Patent Department Francis Wellesplein 1 B-2000 Antwerp B-2000 Antwerp (BE)