Cisco Technology, Inc.

Siemens Enterprise Communications, Inc.

Marcelo Oliveira

Steven L Christenson

Amit Prakash Barave

Shmuel Shaffer

Alex Urquizo

Saravanakumar V Tiruthani

Kiran Hassan

Wentao Fan

A system and methodology to facilitate communication between non-compatible communication devices by utilization of a dynamic media proxy is provided. Information associated with an endpoint, such as, media capabilities, identity and system resource information is collected. Media proxy'ing is performed as part of capability negotiation. A dynamic media proxy is employed based on an analysis of the collected information. An analysis component can identify an endpoint that does not adhere to specific rules of transmission and can dynamically connect such an endpoint to a VTG (virtual talk group) via a proxy to prevent the endpoint from transmitting media into an active VTG that already has multiple talkers streaming media. Additionally, the location where media processing can occur can be dynamically determined based on the available system resources.

Interoperability and communications system dynamic media proxy based on capability negotiation

In one embodiment, a method and apparatus of multiplexing and demultiplexing radio channels includes receiving data through at least one multicast media channel available for use in an Internet Protocol Interoperability and Communications System (IPICS) comprising multiple communication endpoints linkable to a Land Mobile Radio (LMR) in the IPICS; channel mapping the at least one multicast media channel to multiple media channels of the LMR; receiving an audio signal through the at least one multicast media channel; controlling access to the LMR by applying communication access control policies based on the received data upon reception of the audio signal; and operatively linking the LMR to a specified endpoint through the at least one multicast media channel based on the communication access control policies.

Multiplexing and demultiplexing radio channels

A method is provided that accesses a priority and a multimedia stream to be transmitted. The priority then is embedded within the multimedia stream. The multimedia stream thereafter is transmitted. Another method is provided that receives the multimedia stream that includes the priority. Here, another priority is accessed and both priorities are compared. The control of multimedia stream transmissions to other communication devices is based on this comparison.

Priority-based multimedia stream transmissions

An originating endpoint supports visual presence indications. The originating endpoint determines a destination endpoint with which to establish a desired communication session. A network communicates a notification message to the destination endpoint regarding the desired communication session. Prior to establishing the desired communication session and in response to the notification message, the originating endpoint receives image capture data representing the surroundings of the destination endpoint. The originating endpoint may then determine from the image capture data whether to continue or terminate the attempt to establish the communication session. Visual presence indications may increase productivity by reducing the time that would otherwise be spent on unsuccessful call attempts. Visual presence indications may also conserve network bandwidth and processing resources that would otherwise be spent on the unsuccessful call attempts.

Visualization enhanced presence system

Techniques for regulating streams in a Peer-to-Peer (P2P) network are provided. By establishing a priority of a stream, certain users may have some level of assurance that their stream will be received by other peers. The priority may be established based on a variety of parameters including, for example, an identification of the user, a communications channel used for a multicast session, and/or a role of the user.

Stream regulation in a peer to peer network

A voice conferencing system assigns voice conferences across multiple media processors. The voice conferencing system may thereby allow voice conferences to proceed, even when any single media processor in the conferencing system does not have the resources needed to handle the voice conference. The voice conferencing system may enhance communication capabilities, without significantly increasing cost or equipment requirements.

Distributed voice conferencing

In an example embodiment, there is disclosed an apparatus comprising a first communication interface, a second communication interface and tone control logic coupled to the first interface and the second interface. The tone control logic is operable to continuously transmit a guard tone on the second communication interface responsive to receiving data on the first communication interface, comprising data representative of a guard tone. The tone control logic is operable to discontinue transmitting the guard tone in response to a predefined event.

Tone signaling

The present invention is a method and system for balancing the load on processors based upon the CPU utilization information of the processors. Real time CPU utilization information of processors may be effectively analyzed to prevent overloading of processing resources as assigned by a multipoint controller of a VoIP network. CPU utilization information may include the number of current conferencing channels being supported by each processor, CPU speed and the quantity of other applications being supported by the media processor. CPU utilization information from each processor may be retrieved by establishing a communication protocol with each processor and periodically polling the processors in regard to their CPU load capability. Assignment of processing tasks to processors may be based on which specific processors have the capability to handle the processing task.

Growing community of inventors

San Jose, CA, United States of America

Marcelo Oliveira