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EP 0 172 887 A1

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(43)	Date of publication:
	05.03.1986 Bulletin 1986/10

(21)	Application number: 85901241.0

(22)	Date of filing: 15.02.1985

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International Patent Classification (IPC):

H04B 10/ 00^{( . )}
H04J 14/ 08^{( . )}
H04L 7/ 00^{( . )}

H04J 3/ 00^{( . )}
H04L 25/ 40^{( . )}
H04L 7/ 06^{( . )}

(86)	International application number:
	PCT/US1985/000261

(87)	International publication number:
	WO 1985/004064 (12.09.1985 Gazette 1985/20)

(84)	Designated Contracting States:
	DE FR GB NL SE

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Priority:

05.03.1984 US 19840586241

(71)	Applicant: AT&T Corp.
	New York, NY 10013-2412 (US)

(72)	Inventor:
	JACKSON, Kenneth, Arthur Plainfield, NJ 07060 (US)

(74)	Representative: Watts, Christopher Malcolm Kelway, Dr., et al
	AT&T (UK) Ltd. 5, Mornington Road Woodford Green Essex, IG8 0TU Woodford Green Essex, IG8 0TU (GB)

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