At&t Intellectual Property I, L.p.

At+t Corp.

Burwell Goode

Radhika R Roy

Siroos K Afshar

Marian Rogers Croak

Min Lu

Leopold B Strahs

Larry A Russell

Alireza Farid Faryar

Samuel Glazer

Behzad Nadji

Barbara Joanne Kittredge

John T Mulligan

Anand Kumar Singh

Magda K Nassar

Cameron Scott Blandford

Karen McGregor-Barnes

Steve Fisher

Enrique G Cuevas

Susan Roberta Bailey

Bisrat Bulcha

Joubine Dustzadeh

Method and apparatus for providing integrated network and operations control for a converged communications network providing all service types on a common architecture.

Apparatus and method for controlling services and operations in converged communications networks

A method and apparatus for providing a centralized or regionalized transcoding function are disclosed. For example, the method detects a codec mismatch during a call setup between a calling party endpoint device and a called party endpoint device. The method then invokes a transcoding function directly by at least one border element (BE) to handle the detected mismatch, where the transcoding function is performed by at least one centralized or regionalized transcoding server and at least one media resource.

Method and apparatus for providing transcoding in a network

In order to provide a single common cost-efficient architecture for real time communication services for audio, video, and data over internet protocol, a voice over internet protocol (VoIP) system and architecture is provided by placing border elements (BEs) at the interface boundaries between the access network the user devices use and the VoIP infrastructure. The BEs use SIP protocol as the access call control protocol over any access networking technologies, for example, IP, Ethernet, ATM, and FR, and provides all services transparently to the end users that use SIP-enabled devices. To enable a scalable system, the SIP BEs are decomposed into separate communicating entities that make the SIP BE scalable and provide new capabilities not previously available by a self-contained SIP BE. Further, multiple levels of decomposition of a SIP BE can be provided by the present invention supporting a flexible and scalable SIP BE design that further improves system efficiencies and cost advantages as compared to use of single integrated border or edge elements. Further, a scalable SIP BE, made up of a plurality of physical entities for optimization of a large scale design, acts as a single integrated functional entity to logically execute a set of functions at the border of a VoIP infrastructure.

Method and apparatus for functional architecture of voice-over-IP SIP network border element

A method and system for providing fairness of capacity allocation in a network is presented. The method includes intercepting RSVP messages at a PE router, counting capacity requests for reservable classes of service for each VPN on each LSP, and rejecting requests when a VPN has inadequate capacity on the specific LSP. The present method allocates capacity to MPLS VPNs fairly, so that none is starved by the greediness of other VPNs sharing the same LSP.

Fairness of capacity allocation for an MPLS-based VPN

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Weston, CT, United States of America

Burwell Goode