H
Haifeng Bi
Researcher at AT&T Labs
Publications - 10
Citations - 294
Haifeng Bi is an academic researcher from AT&T Labs. The author has contributed to research in topics: Call control & Asynchronous Transfer Mode. The author has an hindex of 5, co-authored 10 publications receiving 294 citations. Previous affiliations of Haifeng Bi include AT&T.
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Patent
Atm-based distributed virtual tandem switching system
TL;DR: In this article, an Asynchronous Transfer Mode (ATM)-based distributed virtual tandem switching system is provided in which a network of ATM-based devices is combined to create a distributed virtual virtual tandem switch.
Patent
ATM-based distributed network switching system
George Coleman Allen,Steven R. Partridge,Samuel Sigarto,Tina Sigarto,Haifeng Bi,Richard Wayne Stephenson +5 more
TL;DR: In this article, the authors proposed a centralized control and signaling interworking function (CS-IWF) device that performs call control functions and adminstrative functions and is adapted to interface narrowband and broadband signaling for call processing and control within the ATM switching network.
Patent
Secure ATM-based distributed virtual tandem switching system and method
TL;DR: In this article, the authors propose a method for providing secure communications through a communications network comprising ATM channels and TDM channels, which includes at least one closed user group of network elements configured to communicate with only other network elements in the closed user groups.
Patent
System and method for measurement-based adaptive caching of virtual connections
TL;DR: In this article, an adaptive SVC caching method and system is provided to offload the high processing capacity burden of ATM switches, where the SVC is kept alive for a variable duration (i.e., delayed release) with the expectation that there will be another call request for the same terminating end office during that time.
Patent
Fault tolerant virtual tandem switch
Haifeng Bi,George Coleman Allen,Randy Beamon,Weijing Chen,Janice Elaine Doerner,Mehran Esfandiari,Gary Jonathan Gibbons,Paul August Kaschube,Bruce Allen Nance,John Pinch,Tina Sigarto,Barbara Engel Smith,Matthew Stafford,George Anthony Young +13 more
TL;DR: In this article, a system and method for reducing and surviving failures in a voice trunking over ATM (VTOA) environment includes an ATM network having a plurality of interconnected ATM switches.