SPEECH/SIGNALLING OVERLAY - Patent 0577804

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EP 0 577 804 A1

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(43)	Date of publication:
	12.01.1994 Bulletin 1994/02

(21)	Application number: 93902452.0

(22)	Date of filing: 25.01.1993

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International Patent Classification (IPC):

H04Q 3/ 00^{( . )}
H04M 7/ 00^{( . )}

H04Q 3/ 62^{( . )}

(86)	International application number:
	PCT/GB1993/000153

(87)	International publication number:
	WO 1993/015583 (05.08.1993 Gazette 1993/19)

(84)	Designated Contracting States:
	CH DE ES FR GB IT LI NL SE

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Priority:

24.01.1992 GB 19920001540

(71)	Applicant: GPT LIMITED
	Coventry, CV3 1HJ (GB)

(72)	Inventors:
	TROUGHT, Mark Timothy Beeston, Nottinghamshire NG9 6JE (GB) ELWELL, John West Bridgeford, Nottinghamshire NG2 6LT (GB) SPIERS, Ian Ryton-on-Dunsmore, Warwickshire CV8 32S (GB) KORPI, Markku D-8130 Stanburg (DE)

(74)	Representative: Branfield, Henry Anthony
	The General Electric Company, p.l.c. GEC Patent Department Waterhouse Lane Chelmsford, Essex CM1 2QX Chelmsford, Essex CM1 2QX (GB)

(54)	SPEECH/SIGNALLING OVERLAY