ENHANCED ENCODING OF DTMF AND OTHER SIGNALLING TONES - Patent 0913034

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EP 0 913 034 A2

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(43)	Date of publication:
	06.05.1999 Bulletin 1999/18

(21)	Application number: 97931602.0

(22)	Date of filing: 17.07.1997

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International Patent Classification (IPC):

H03M 7/ 42^{( . )}

H04Q 7/ 22^{( . )}

(86)	International application number:
	PCT/CA1997/000516

(87)	International publication number:
	WO 1998/004046 (29.01.1998 Gazette 1998/04)

(84)	Designated Contracting States:
	DE FR GB SE

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Priority:

17.07.1996 US 19960021911P

(71)	Applicant: Université de Sherbrooke
	Sherbrooke Québec, J1K 2R1 (CA)

(72)	Inventors:
	SALAMI, Redwan Sherbrooke, Quebec J1J 4L3 (CA) LAFLAMME, Claude Sherbrooke, Quebec J1J 2S8 (CA) ADOUL, Jean-Pierre Sherbrooke, Quebec J1K 2P8 (CA)

(74)	Representative: Sauvage, Renée
	Cabinet Sauvage 100 bis, avenue de Saint-Mandé 75012 Paris 75012 Paris (FR)

(54)	ENHANCED ENCODING OF DTMF AND OTHER SIGNALLING TONES