3com Corporation

Hewlett-packard Development Company, L.P.

Hewlett-packard Company

Other

Utstarcom, Incorporated

Michael Homeier

David A Grabelsky

Anoop Tripathi

Guanglu Wang

Boby Joseph

Sudhakar Ramakrishna

Boris Bekkerman

A method for rerouting IP (Internet Protocol) telephony call information includes, during an active IP telephony call made by a first IP telephony phone for originating IP telephony calls over an IP network, with a boundary element, actively detecting a network failure condition in the IP network which indicates a switchover to a PSTN (Public Switched Telephone Network) network and generating a failure notification; and with a server for receiving the failure notification, generating a dynamic switchover instruction generated that is sent to the first IP telephony phone, the dynamic switchover instruction initiating automatic switchover of the active IP telephony call to a PSTN network. A method for rerouting IP (Internet Protocol) telephony call information includes, with a server, monitoring an IP network for route failures; and with the server, generating a switchover instruction when an active IP telephony call is interrupted by a route failure. The switchover instruction initiates automatic switchover of the active IP telephony call to a fallback call routed through a Public Switched Telephone Network (PSTN). The switchover instruction includes information which identifies the fallback call as a replacement for the active IP telephony call.

Method and apparatus for PSTN-based IP active call recovery and re-routing

A system and method for network based policy enforcement of intelligent-client features is provided. An operator of an IP telephony and/or IP multimedia network may enforce authorization or privileges of intelligent end-user clients to utilize or invoke services in the network. A network policy enforcement point is maintained in the network by elements that are under control of the network operator. The network policy enforcement point controls access to, and invocation of, features and services that may otherwise be delivered to subscribers without the knowledge or authorization of the network. The network policy enforcement point receives messages, associates the message with a known service, makes a determination as to whether a beneficiary of the service is authorized to invoke the service, and then filters the messages based on the determination.

System and method for network based policy enforcement of intelligent-client features

Providing enhanced emergency services (E-911) to an IP Telephony-based PBX or similar system, by utilizing aspects of the intelligence of end-user SIP client devices to address challenges and difficulties associated with E-911-like services in LAN-based telephony environments.

IP-based enhanced emergency services using intelligent client devices

A method and system for rerouting IP telephony call information. The system includes an existing IP telephony call, the telephony call originating at a first IP telephony phone. A second IP telephony phone receiving the IP telephony call from the first IP phone and a network routing condition, the routing condition causing the IP telephony call to be rerouted. A switchover instruction, the switchover instruction initiating a switchover of the existing IP telephony call to a PSTN.

A system and methods are shown for providing presence state services in an Internet Protocol network. One exemplary system includes a central presence element configured to track and provide user presence state information, and a local presence element in communication with the central presence element and further in communication with a signaling entity. According to one embodiment, the local presence element is configured to create and manage local presence state authorization data generated based on user presence state information being received from the central presence element. Further, the local presence element is configured to authorize a user service request using the local presence authorization data before providing access to a service requested by the user in the user service request.

System and methods for providing presence services in IP network

A system and method for maximizing the use of bandwidth optimization techniques in a voice-over-packet telephony system. In exemplary embodiments, the VOP system includes a plurality of telephones connected to a VOP telephony system. Upon receiving request to initiate a VOP connection, the end office switch connects to an originating softswitch for signaling functions and to an originating media gateway for transporting the media associated with the VOP connection. A connection information system accessible to the softswitch maintains connection information relating to media sessions between the originating media gateway and a plurality of candidate terminating media gateways. The connection information system may be accessed during connection initiation and advantageously used to determine whether there are nearly-simultaneously occurring and distinct media sessions having common endpoints such that bandwidth optimization techniques may be implemented.

System and method for maximizing the use of bandwidth optimization techniques in voice-over-packet connections

A method and system for providing directory based services is provided. The directory service may process an ambiguous destination identifier from a call-session request to multiple database entries in a directory server, and return an appropriately constructed response that can be interpreted by a user as a prompt for additional input to refine the destination identifier. The possible matches could be sent as a list of possible choices. The user can then select the desired match from the list and send a follow-on request including the selection to the directory server. Based on the selection, the directory server will then either send additional possible matches to the user or obtain a contact address corresponding to the selection. After resolving the ambiguous match to a unique destination identifier, a call can then be established.

Method and system for providing directory based services

Systems and methods for controlling features and services in packet-based networks are disclosed. The present application provides systems and methods that include sending a first message to a network core device, and identifying a profile from user account information stored on the network core device. The profile specifies which features and services may or may not be implemented by an end device. In the systems and methods of the present application, the profile is added to a second message that is sent from the network core device to the end device. Alternatively, a single message or multiple messages containing the profile, regardless and/or independent of any prior message sent from an end device, may be sent from the network core device to the end device. These systems and methods may also use the session initiation protocol for their communications, with the end devices being session initiation protocol phones and the network core device being a session initiation server.

Architecture and method for controlling features and services in packet-based networks

A system and method for multicasting announcements in a communication network. An address is established in a memory. Announcements are formed. The announcements are broadcast on the address.

System and method for multi-casting announcements

A system and method for teleconferencing using multiple media mixers is provided. In an exemplary embodiment, a conferencing system may include a conference control server in communication with a central media mixer (CMM) and one or more edge media mixers (EMM). The conference control server may create a media path that connects the CMM and the EMM(s) via a call-control protocol. Additionally, conference participants may communicate with one another by connecting to the CMM and/or the EMM.

System and method for large capacity conference calls

A system and method for establishing a conference between a first user and a second user. The first user has an audio stream. The second user has an audio stream. The conference has an audio stream. A temporary conference is created. The audio stream of the conference is directed to the sidebar conference. The audio stream of the first user is directed to the temporary conference and the audio stream of the second user is directed to the temporary conference. The audio stream of first user and the audio stream of the second user are only audible to the first user and the second user.

System and method for sidebar functionality in a regular conference system

A system and method for routing information includes a resource manager. The resource manager includes a configuration table. The configuration table includes at least one group of physical gateway addresses, each of the at least one group of physical gateway addresses has a single and unique logical identifier. The resource manager is coupled to a plurality of gateways. A proxy coupled to the resource manager. The resource manager receives a register request message from a selected one of the plurality of gateways.

Growing community of inventors

Elmhurst, IL, United States of America

Michael Homeier