Remote Switch Systems, Inc.

Gary E Long

Robert B Smith

Gary C Fields

Eric M DeLangis

Disclosed is a serial communications protocol for connecting a master and a plurality of slaves using three communication lines. The protocol establishes a method for communication between the master and any slave. Any device on the communication bus may initiate the communication. A method of arbitrating any bus collisions is also given.

Three wire communication protocol

A system for dynamic allocation of voice and data channels in a time division multiplexed telecommunication system is disclosed. Multiple time division multiplexed lines are provided between a Teleco central office and a number of remote terminals. The time division multiplexing provides multiple channels on each of the multiple DSL lines so that multiple POTS devices can be connected to a single remote terminal. In addition, the remote terminal provides a high speed data port for connection to a data device such as a computer, a router, a bridge, a switch or other similar devices. The multiple TDM channels on each DSL line are allocated so that all of the channels are available for transmission of voice signals and all of the remaining open channels are available for the transmission of data signals. Open available channels are allocated for the transmission of data packets only during the duration of the transmission time of the data packet to minimize the delay in allocation of channels for the transmission of voice signals. The Teleco central office includes a central office terminal controller that is under the control of a CPU that routes voice signals to the central office switch and data signals to an Ethernet interface. The CPU of the central office terminal controller also routes data from external sources to the appropriate line card for transmission on the correct DSL line to the destination remote terminal. Voice signals from the central office switch are also routed by the CPU to the correct line card for transmission on the proper DSL line to the remote terminal connected to the destination POTS device. The POTS devices can comprise telephones, fax machines, or modems. Data devices transmit and receive data packets such as Ethernet data packets. High data transfer rates are possible since the data packets that are sent and received by the data devices are distributed over all of the open, available channels that are not being used by the POTS devices. Subscribers can subscribe to a preset number of channels to meet the subscriber's voice and data transmission needs. The number of available channels can be programmed by central office personnel through an administrative and maintenance terminal.

Dynamic allocation of voice and data channels in a time division multiplexed telecommunications system

Apparatus and methods for a remote cable switching system for selectively switching pairs of an incoming trunk to one or the other corresponding pairs of two available outgoing trunks are disclosed. The system includes at least one remote switch module, a normally quiescent remote control module, and a central office controller which provides the remote control module with operating power and with switching commands during a command sequence. The remote control module accumulates power and decodes the sent switching commands in order to operate identified bistable switches of the switch module to establish the desired matrix. Circuitry for remotely testing proper tip-ring orientation of the connected pairs is provided at the central office is also disclosed and claimed.

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Loveland, CO, United States of America

Gary E Long