3com Corporation

Paul Francis Dryer

Michael Sean McCormack

Steve Weeks

Steven V Weeks

Nicholas Mark Stapleton

Angel Pino

Diana Fayngersh Lee

The PBX system includes an analog to digital, and digital to analog, (A/D) conversion where the sample size and the sample rate are selectively adjustable. The A/D structure includes registers which hold values indicating the sample size and the sample rate for the conversion. When the A/D structure is configured, the A/D structure reads the values in the register and configures itself to the sample rate and sample size indicated by the registers. When the sample size and sample rate is to be changed, the values in the registers are changed and the A/D structure is reconfigured.

System for the processing of audio data used for music on hold and paging in a private branch exchange

A bridge board connects a TMS470 processor evaluation module and a TMS320C54XX processor evaluation module. The bridge board performs translation of signal formats on both of the boards and also synchronizes the signal formats on both boards so that both boards are able to operate together. With this bridge board, and its specific connections to both of the evaluation modules, a single workstation, preferably connected to the TMS470 module is able to not only control the TMS470 module but also the TMS320 module. Software for the TMS320 can be loaded from the workstation through the TMS470 module, through the bridge board and into the TMS320 module. The software in both of the evaluation modules can then operate and interact with each other through the bridge board.

Method and apparatus for interfacing a spectrum digital incorporated TMS470 evaluation board with a spectrum digital incorporated TMS320LC54X evaluation board

A card, particularly a digital line card is provided for use with a chassis having a slot for receiving the digital line card. The chassis has an Ethernet bus for receiving packets from the line card and has a power supply and power strip for supplying power to the line card. The line card includes a public switched telephone network (PSTN) digital line input/output interface for sending digital signals over the PSTN and for receiving digital signals from PSTN. A line card control processor is connected to the digital line input/output interface. An Ethernet input/output is provided for sending packets over a local network corresponding to signals received from the telephone line and for receiving packets from the local network and forwarding received signals to the digital line input/output interface. The Ethernet input/output has a controllable backplane interface to the Ethernet bus including a switch normally active to direct data flow between the line card and the Ethernet bus, an Ethernet transceiver connectable to an Ethernet network, and an Ethernet link signal detector for detecting an Ethernet link signal at the Ethernet transceiver and deactivating the switch to isolate the line card from the Ethernet bus and to force data flow through the Ethernet transceiver. The card may also be part a network system with a chassis having a backplane Ethernet bus.

System for isolating ethernet network traffic

A programmable telephone system including system software and system hardware. The system software includes instructions for operating the telephone system, and requires license information to operate. The system hardware includes a system specific memory and a system board. The system board executes the instructions of the system software. The system specific memory store is the license information and is separately replaceable from the system board in the system hardware.

System for maintaining PBX license key information in the event of a hardware failure reducing MTTR

A telephone set of a telephone system is provided with an infrared interface. This infrared interface is able to communicate with an infrared port on a local computer. The computer is configured to send data to the infrared port, and receive data from the infrared port, in the same manner as if the computer was sending and receiving data over a telephone system. The telephone circuitry in the telephone system receives the infrared data and converts the infrared data into a format for transmitting across the telephone system.

System for providing modem access via an IR interface in a PBX

According to the invention, an Ethernet system and method of using an Ethernet system is provided including a network side device (a hub/switch/concentrator), and a plurality of end devices (either a standard end device powered locally or a system powered device), connected to the hub/switch. The system powered devices have circuitry for indicating the system power need to the hub, which has a power source for selectively supplying system power over the Ethernet. A stimulus device associated with the network device sends a stimulus signal over the network connection lines during a detection phase. The need for power is signaled by an indication device associated with the system powered end devices, providing an indication signal in response to the stimulus signal. A detector associated with the network side detects the indication signal thus triggering the power source to supply system power to each of the end devices that is a system powered device and not to each of the end devices that is a standard device.

System and method for signaling and detecting request for power over ethernet

A telecommunication apparatus and method for providing packets to at least one of a first and a second network are described. A telephone set connects the first network to the second network. In one embodiment, the telephone set includes two MAC devices. Each MAC device is in electrical communication with one of the two networks via a communication path. In another embodiment, a packet switching device provides the separate communication paths to the two networks. The telephone set forwards packets received from one network to the other network, generates packets from signals locally inputted into the telephone set and forwards such generated packets to at least one of the networks, and performs actions prescribed by packets received by and addressed to the telephone set. Packets addressed to the telephone set may or may not be forwarded.

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Medway, MA, United States of America

Paul Francis Dryer