Intervoice Limited Partnership

Nec America, Inc.

Roland El-Khoury

Ellis K Cave

Huey P Dixon

Steve L Hankins

Feng Mo

A system and method for a packet VRU which directly utilize packet network protocols, such as those of the H.323 standard, to provide enhanced services via a packet network, such as whisper mode communications, call recording, call broadcasting, advertisement broadcasting during calls, one-number service, and operator services. In a preferred embodiment of the present invention, the packet VRU establishes control of media streams, such as through the use of separate signaling channels associated with various communication devices, in order to provide desired enhanced call services.

Cooperative media applications using packet network media redirection

A system and method for a packet VRU which directly utilize packet network protocols, such as those of the H.323 standard, to provide enhanced services via a packet network. The packet VRU generally operates within the packet network and is not required to provide data format translation or multiple device-type access. In a preferred embodiment of the present invention, the packet VRU redirects the media stream from a source so that it is sent directly to a destination, instead of passing through the packet VRU. Alternatively, if the packet VRU must perform processing on the message contents, the packets may be sent to both the destination and to the packet VRU. The packet VRU may still retain call control over the media streams by maintaining the signaling and user input components of the call.

System and method for packet network media redirection

A system and method are disclosed which utilize an enhanced direct memory access (DMA) to both perform a desired data transfer and update data queue directories as needed to properly reflect such data transfer. The enhanced DMA is implemented to receive a data transfer request that comprises at least one data transfer descriptor indicating the desired data transfer, and at least one record update descriptor indicating one or more data queue directories to be updated to properly reflect the desired data transfer. In response, the enhanced DMA both performs the desired data transfer and updates one or more data queue directories to properly reflect such data transfer within the data queue directories. Thereafter, the enhanced DMA notifies the requesting driver that the desired data transfer operation is complete.

System and method for efficient data transfer management

A multi-logical access for a serial data link designed with a multi-logical serial interface protocol which permits multi-drop applications to communicate in a time division multiplex mode over a singular drop or physical serial link such as an RS-232 link. Data is exchanged over the serial data link between multiple applications on a transmitter side of the serial data link and multiple applications on a receiver side of the serial data link. Both the transmitter and the receiver have a link layer connected to the serial data link for handling the transmission/receiving of packets through the serial data link, for detecting the start/end of each packet, and to ensure the sequence of the packets. Both the transmitter and the receiver also have a relay layer connected between the multiple applications and the link layer, which operates to allow the different access functions to share the serial data link. Each link layer and each relay layer includes functions of protocol synchronization to provide for error-detection and error-recovery in the transmission of packets. The multi-logical access provides full duplex communication between a hand held telephone and a PC over the serial data link, wherein the portable hand held telephone and the PC each comprises a link layer and a relay layer.

Multi-logical access for a serial data link

A system and method for a packet Voice Response Unit (VRU) which directly utilize packet network protocols, such as those of the H.323 standard, to provide enhanced services via a packet network. The packet VRU generally operates within the packet network and is not required to provide data format translation or multiple device-type access. The packet VRU may be built entirely in software running on a network server with a standard packet network connection such as Ethernet or token-ring. In a preferred embodiment of the present invention, the packet VRU redirects the media stream from a source so that it is sent directly to a destination, instead of passing through the packet VRU. Alternatively, if the packet VRU must perform processing on the message contents, the packets may be sent to both the destination and to the packet VRU. The packet VRU may still retain call control over the media streams by maintaining the signaling and user input components of the call. In another preferred embodiment of the present invention, a gateway may convert user input indication signals received from a party connected via the gateway into user input indication messages in an out-of-band channel to be read by the packet VRU, separate from the redirected media streams. The packet VRU may generally provide the existing enhanced services of a synchronous VRU but in a packet network environment, and in addition provide enhanced services for multimedia communications.

Growing community of inventors

Flower Mound, TX, United States of America

Roland El-Khoury