Switching system and method for network having a plurality of te

Details Switching system and method for network having a plurality of te Switching system and method for network having a plurality of te

1985-05-15

1987-06-09

Dwyer, James L.

Telephonic communications

Centralized switching system

Switching controlled in response to called station...

370 96, H04Q 1104

Patent

active

046726624

ABSTRACT:
A switching system for a network having terminal control equipment units connected to a network termination unit, in which terminal control equipment units of the same kind are connected with an exchange through a subscriber's line which has assigned to it a single subscriber number and which has a plurality of communication channels. The system including storage units for each terminal control equipment unit of the subscriber's line for storing call status of incoming calls. When a first incoming call is received, the storage units of the terminal control equipment units set respective call status for the first incoming call to a ringing state. When a second incoming call is received before a response to the first incoming call is transmitted, the storage units also set the call status for the second incoming call to a ringing state. When any one of the terminal control equipment units in the ringing state delivers a response, the call status for the first incoming call of the terminal control unit delivering the response is set to an active state and the call status for the first incoming call of the other terminal control units in the ringing state are released. The call status for the second incoming calls are maintained.

REFERENCES:
patent: 4394756 (1983-07-01), Canniff
Skaperda et al., "Anforderungen und Losungswege fur das Digitalvermittlungssystem EWDS im ISDN" Telcom Report, vol. 6, No. 3, Jun. 1983, pp. 174-179.
Jajafi, "Techniques for Implementation of ISDN Terminals", IEEE International Conf. on Communications, Links for the Future, vol. 1, May, 1984, pp. 281-284.
Fink et al., "System Concept of a PABX Integrating Voice and Data", IEEE International Conf. on Communications, Links for the Future, vol. 1., May, 1984, pp. 141-144.
Bourgonje, "Twisted-pair bus carries speech, data, text and images", Electronics Design, vol. 32, No. 15, Jul. 1984, pp. 171-176, 178.

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