Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Patent
1996-09-13
1998-12-29
Patel, Ajit
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
370410, H04L 1228, H04L 1256
Patent
active
058547894
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
ATM communication systems with a modular structure serve for the connection of communication terminals with high transmission rates in private and public communication networks. The transmission and switching of the messages takes place according to the Asynchronous Transfer Mode (ATM), in which the information items to be transmitted are transmitted and switched in packet form, i.e. with packets of fixed length (cells) in accordance with CCITT Standard I.361. Internationally standardized transport bit rates are currently 155 and 622 Mbit/s. With the aid of channel and path information inserted in the cell headers of the cells, the cells are transmitted over a virtual transmission channel from one communication terminal via at least one communication system to a particular communication terminal. The transmission channel is set up by signalling from a subscriber--as in the known time-division multiplex communication systems--or by an administrative input at the communication system and is logically retained for the duration of the connection. The bandwidth of such a transmission channel is flexible and is applied for when the connection is established. Such basic functions of ATM communication systems are known from the publication "ATM Technologie fur zukunftige 1992.
The publication ICC '94, "Design and Implementation of a Distributed Call Processing Architecture" already discloses an ATM communication network structure in which the ATM communication terminals are connected on the one hand to an ATM communication system, effecting the through-connection, and on the other hand via a local area network to a server, realizing the call control, and to a server, realizing the connection control. In the ATM communication terminals, in the call-control server and connection-control server and in the ATM communication system there is provided in each case a program with the known standardized ATM functions. In the case of this ATM communication network structure, the ATM connection control and ATM information transmission are handled via different communication networks.
For the realization of, in particular, relatively small ATM communication systems, a separation of the communication system into a switching device, effecting the switching of the connected ATM communication terminals, and a control device, effecting the connection control of the ATM communication terminals and also administering and monitoring the communication system, has been proposed, it being possible for the control device to be realized by a personal computer. The exchange of messages between the switching device and the control device is controlled with the aid of a communication module integrated in the switching device and a communication adapter inserted in the control device.
SUMMARY OF THE INVENTION
To be regarded as the object on which the invention is based is that of designing a modular program structure for a communication system with such a modular structure.
In general terms the present invention is an ATM communication system with a modular structure for the connection of ATM communication terminals. The system has a switching device with at least one multi-tasking operating system. In the switching device a transport program module, realizing a message transport interface between the operating system and a message distribution program module, is managed. A dependability subprogram structure monitors the components of the switching device and configures them in the event of an error. An operation subprogram structure controls the virtual connections for the message traffic in the switching device. A switching control subprogram structure controls switching aspects of the connections with a control device and adapts the switching messages to the physical design of the switching device. Messages within the program structures of the switching device and to and from the control device are controlled by the message distribution program module. The system also has a control device with a multi-taskin
REFERENCES:
patent: 4907220 (1990-03-01), Rau et al.
patent: 5506842 (1996-04-01), Beck et al.
patent: 5515377 (1996-05-01), Horne et al.
patent: 5546386 (1996-08-01), Gass
patent: 5596572 (1997-01-01), Wille-Fier et al.
International Conference on communications ICC (1994), Design and Implementation of a Distributed Call Processing Architecture, by T.F. La Porta et al, pp. 278-282.
AT&T Technical Journal, vol. 72, Nov./Dec. (1993), Technologies for Broadband Switching, by Pashan et al, pp. 39-47.
Siemens publication (1992), ATM Technologie fur zukunftige Breitbandnetze, (ATM Technology for Future Broadband Networks), pp. 1-22.
Kirchberger Klaus
Lesch Hilmar
Rombach Horst
Stockl Werner
Patel Ajit
Siemens Aktiengesellschaft
LandOfFree
ATM communication system with a modular structure and communicat does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with ATM communication system with a modular structure and communicat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and ATM communication system with a modular structure and communicat will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1428824