Abstract: Methods and apparatus are set forth for quickly making switched virtual connections (SVCs) in a digital circuit switch that integrates voice and data using common switch, control and distribution equipment. SVCs provide concurrent data connection service from one station device, such as a PC, to other station devices over a single line for each station device where the line may also carry voice and terminal data service. A switch control processor remembers connection requests from station devices and acts on opportunities to utilize available bandwidth in an optimal manner. Dynamic connection reconfiguration techniques allow the system to "scavenge" bandwidth unused by voice or terminal data traffic for SVCs thereby providing the largest possible data rate at any given time. Short signalling messages and indexed values are used in order to speed activation time for previously defined connections while resource allocation is performed by the switch control processor to further enhance system operating speed.

Abstract: An integrated office controller (IOC) network includes, in combination, a plurality of station devices each capable of transmitting and receiving multiplexed bearer and signal channel information; user port interface means for carrying said multiplexed information between a station device and a station multiplex/demultiplex device (SMX); a plurality of SMXs, each associated with and coupled to a predefined cluster of said station devices, via said user port interface means, for concentrating the multiplexed information froms said interface means into channel signals, central equipment module (CEM) means, including a call processor, a non-blocking switch matrix and clock means, for switching channel signals through said switch matrix under the control of said cell processor and clock means; transmission system means, capable of interfacing SMXs and trunk cards to said CEM, where said transmission system means includes modular line interface module (LIM) means for interfacing a plurality of SMXs and the CEM, an

Abstract: A marker circuit communicating with a stored program controller and switch stages, implementing pathfinding, connect, and disconnect operations while using address, status, and data buses to control the switch through exchange of connect information from the stored program controller and disconnect information from the switch control stores.

Abstract: A time space time (TST) switch using two basic modules, a time switching module and a space switching module with individual module elements interconnectable to realize a great range of time division switch sizes and configurations. Control stores and state stores associated with respective switching elements are combined and incorporated into the time switch and space switch modules.