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| Number | Title | Issue Date |
| 4755988 | Data communications switching device having multiple switches operating at plural selectable data rates A large scale integrated circuit device is disclosed that can be used as a component in a variable bandwidth branch exchange system or for other applications utilizing programmable network switching. The device contains a plurality of duplex per line swit... | 07/05/1988 |
| 4679191 | Variable bandwidth switching system The present invention provides a communications system that improves upon the availability of communications paths between devices and simplifies the connectivity requirements to communicate data and control information to and from a remote station. Syste... | 07/07/1987 |
| 4598397 | Microtelephone controller A large scale integrated circuit device is disclosed that can be used as a component in a variable bandwidth branch exchange system or for other applications utilizing programmable serial data rate conversion. The device can be a serial information interf... | 07/01/1986 |
| 4597077 | Integrated voice/data/control switching system A communications switching system is provided for transferring information between a plurality of node information highways (66,68) and between node information highways (66,68) and station ports (284,286), the system (221) comprising a plurality of switc... | 06/24/1986 |
| 4587651 | Distributed variable bandwidth switch for voice, data, and image communications A variable bandwidth branch exchange system is disclosed for interfacing a network ring to a plurality of peripheral loops, each of the peripheral loops being connected to one or more local stations and to a node on the network ring. Time bit slots on the... | 05/06/1986 |
