Multiplex communications – Wide area network – Packet switching
Patent
1991-01-31
1995-08-08
Chin, Wellington
Multiplex communications
Wide area network
Packet switching
370 681, H04L 1264
Patent
active
054405548
ABSTRACT:
A broadband private automatic branch exchange is to be implemented in which all broadband user stations can be switched like normal telephone terminals with all features of a conventional telephone private automatic branch exchange and without each broadband terminal requiring its own operator position. To achieve this, in accordance with the invention, all the broadband terminals (BB-E1, BB-E24) which are connectable via a broadband switching array (BB-V) to the subscriber line unit (TAE) of the public broadband network (VBN) are also connected like ordinary telephone user stations to a narrow band telephone private automatic branch exchange system (SB-PABX) which is connected via a signaling conversion module (VBNA) to the line unit (TAE) and which initiates the narrow band call setup and controls the broadband switching array for switching broadband calls.
REFERENCES:
patent: 3997736 (1976-12-01), Gorman, II
patent: 4796254 (1989-01-01), van Baardwijk et al.
patent: 4876681 (1989-10-01), Hagiwara et al.
patent: 5097466 (1992-03-01), Kammerl
patent: 5115426 (1992-05-01), Spanke
P. Pernsteiner et al, "Video- und Datenkommunikation im VBN", NTZ Nachrichtentechnische Zeitschrift, vol. 42 No. 8, 1989, pp. 486-493.
Dunger Hartmut
Stannard Richard
Werbus Volker
ALCATEL N.V.
Chin Wellington
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