A private branch exchange,and a method for selectively communicating a central processing unit with respective modules connected to the private branch exchang

Bibliographische Detailangaben

Hauptverfasser:	MARTIN J CARROLL, KENNETH CUNNINGHAM, TONY O'BYRNE, ANTHONY J BYRNE, DAVID BALLOCH, SASA SAMARDZIC, GRAHAM WARWICK, CIARAN KELLY, SEAN YOUNG, JOHN P M O'CONNOR, SEAMUS GALLAGHER, ENDA SULLIVAN, JOHN PURCELL, MICHAEL NOEL O'KEEFFE
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY SELECTING TELEPHONIC COMMUNICATION
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