(19)

(11)

EP 0 916 183 A1

(12)

(43) Date of publication: 19.05.1999 Bulletin 1999/20 (21) Application number: 98929147.0 (22) Date of filing: 01.06.1998

(51) International Patent Classification (IPC):  H03F 3/ 42( . ) H03G 3/ 30( . ) H03G 1/ 00( . ) (86) International application number: PCT/BR1998/000030 (87) International publication number: WO 1998/054833 (03.12.1998 Gazette 1998/48)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 30.05.1997 BR 19970003233 (71) Applicant: TELECOMUNICACOES BRASILEIRAS S/A-TELEBRAS 13088-061 Campinas - SP - Brazil (BR)	(72) Inventors: CORSO, Valentino CEP-13070-460 Campinas, SP (BR) BASTIDA, Ezio, Maria CEP-13090-001 Campinas, SP (BR) (74) Representative: Leeming, John Gerard  J.A. Kemp & Co., 14 South Square, Gray's Inn London WC1R 5LX London WC1R 5LX (GB)