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Programmed Sharing of Switched Network Resources

IP.com Disclosure Number: IPCOM000076541D
Original Publication Date: 1972-Mar-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Wheeler, WR: AUTHOR

Abstract

The described program sets out an improvement in the use of communication lines by using the least costly service for any communication unless there will be a substantial delay, in which case a more expensive service may be used. The communication lines of a large network, utilizing the public-switched network in various grades of service, will have the lines separated into groups of comparable characteristics with each group being assigned to a group of terminals. The groups of lines may be termed dial sets, and they are lines accessible by a control program and having similar physical characteristics used to support one segment of the network.

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Programmed Sharing of Switched Network Resources

The described program sets out an improvement in the use of communication lines by using the least costly service for any communication unless there will be a substantial delay, in which case a more expensive service may be used. The communication lines of a large network, utilizing the public- switched network in various grades of service, will have the lines separated into groups of comparable characteristics with each group being assigned to a group of terminals. The groups of lines may be termed dial sets, and they are lines accessible by a control program and having similar physical characteristics used to support one segment of the network. Limitations are that all lines must operate in the same mode, half or full-duplex, must meet the data set restrictions of the group of terminals and must be transparent to line control, print-to-point, multipoint and terminal characteristics.

The terminals are assigned to the dial sets according to any criteria desired and when a terminal is to be contacted, the processor interrogates the dial set for a free line to be used. Flexibility and usefulness can be improved by the additions of queueing on a dial set so that if a term terminal cannot be immediately serviced, it will be placed on the queue for service in turn when a line of its data set is available. Another addition, is the use of secondary service dial sets. When any dial set, such as A, reaches a preset queueing...