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AssigneeBell Communications Research, Inc.
InventorsBarnet M. Schmidt, Lawrence P. Schopperth
Estimating the term…
An operating system is provided for an analog switching machine having switch fabric formed by multiple line and trunk link networks having interconnected switch stages with each switch stage having multiple grid connections and makes post-connection continuity checks. Error messages are generated for connection faults and sent to a monitor and analyzer computer. The error messages are automatically processed to identify the root causes of connection faults, i.e. to detect open and stuck crosspoints, faulty interstage links and faulty pulse path devices. The analyzer computer further generates command signals that provide for removal of faulty crosspoints and other failed elements from analog switching machine operation.
A system for operating an analog telephone switching machine having a first plurality of paired line link and trunk link networks, each of the paired networks having a second plurality of sequentially interlinked switch stages, each of the switch stages having multiple grids with input levels and output levels interconnectable at crosspoints by respective relay switches and interconnectable between switch stages by links to form call connection paths, and pulse order objects being provided in a third plurality of pulse paths for energizing the crosspoint relays, the system comprising:
A system for operating an analog telephone switching machine having a first plurality of paired line link and trunk link networks, each of the paired networks having a second plurality of sequentially interlinked switch stages, each of the switch stages having multiple grids with input levels and output levels interconnectable at crosspoints by respective relay switches and interconnectable between switch stages by links to form call connection paths, and pulse order objects being provided in a third plurality of pulse paths for energizing the crosspoint relays, the system comprising:
A method for operating an analog switching machine having a first plurality of paired line link and trunk link networks, each of the paired networks having a second plurality of sequentially interlinked switch stages, each of the switch stages having multiple grids with input levels and output levels interconnectable at crosspoints by respective relay switches and interconnectable between switch stages by links to form call connection paths, and pulse order objects being provided in a fourth plurality of pulse paths for energizing the crosspoint relays, the method steps comprising:
Dependencies are inferred from the claim text.