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Switching Matrix for Data Forwarding

IP.com Disclosure Number: IPCOM000081497D
Original Publication Date: 1974-Jun-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 3 page(s) / 79K

Publishing Venue

IBM

Related People

Kahle, W: AUTHOR [+2]

Abstract

In the servicing of data processing installations, it is often necessary for a service man to use a remote diagnostic computer center for assistance, and to also discuss procedures with a local specialist. In the switching matrix set out schematically in the drawings, the local specialist is given circuits to enable him to talk with the service man or to forward the call to a remote computer in a data format for diagnosis. The specialist can monitor the data transmission and can take control of the line if a voice consultation is desired.

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Switching Matrix for Data Forwarding

In the servicing of data processing installations, it is often necessary for a service man to use a remote diagnostic computer center for assistance, and to also discuss procedures with a local specialist. In the switching matrix set out schematically in the drawings, the local specialist is given circuits to enable him to talk with the service man or to forward the call to a remote computer in a data format for diagnosis. The specialist can monitor the data transmission and can take control of the line if a voice consultation is desired.

In Fig. 1, a technician in need of assistance at the customer's installation will use a customer's data set 1, to call through the public switched network 2 a specialist's phone 3 at a central office. If the diagnostic ability of a remote CPU 4 is needed, the specialist will operate a switch 5 to transfer the incoming phone line to the input of a switching network 6 for his station. A speaker 7 in a control box 8 will enable him to monitor the signals on the line from the customer's installation.

The input switch will select one pair of a number of back-to-back modems 9, for connection to the line from switch 5. An output switch 10 for the station will be simultaneously activated, to connect the output of the selected modem pair 9 to a circuit through a public switched network 11 or through leased lines to CPU
4. The specialist will monitor the data transmission to CPU 4 from the customer's phone 1 and if he and the service man need to consult, a release of switch 5 will put them back into verbal communication.

Each specialist's phone 3 has a set of switches 6 and 10 to select an idle modem pair 9 and when a thru circuit is needed, the specialist will operate a switch 12 in box 8 to activate a switch control 13. As shown in Fig. 2, control 13 receives a station select signal from a station clock 15 which drives a decoder 16, to activate the switch controls 13 for...