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George C Allen Jr, Haifeng Bi, Steven R Partridge, Samuel Sigarto, Richard W Stephenson: ATM-based distributed virtual tandem switching system. SBC Technology Resources, Greenblum & Bernstein, January 2, 2001: US06169735 (97 worldwide citation)

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 tandem switch. The system includes an ATM switching network that dynamically sets up individual switched virtual conne ...


2
George C Allen Jr, Haifeng Bi, Steven R Partridge, Samuel Sigarto, Richard W Stephenson: ATM-based distributed virtual tandem switching system. SBC Technology Resources, Greenblum & Bernstein, May 14, 2002: US06389011 (36 worldwide citation)

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 tandem switch. The system includes an ATM switching network that dynamically sets up individual switched virtual conne ...


3
George C Allen Jr, Haifeng Bi, Steven R Partridge, Samuel Sigarto, Richard W Stephenson: ATM-based distributed virtual tandem switching system. SBC Technology Resources, Greenblum & Bernstein, February 5, 2002: US06345048 (30 worldwide citation)

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 tandem switch. The system includes an ATM switching network that dynamically sets up individual switched virtual conne ...


4
Haifeng Bi, Matthew Wayne Stafford, Tina M Sigarto: Secure ATM-based distributed virtual tandem switching system and method. SBC Technology Resources, Greenblum & Bernstein, June 29, 2004: US06757278 (27 worldwide citation)

A system and method for ensuring security in a voice trunking over ATM (VTOA) environment is provided. A telecommunications network is provided that carries control traffic and bearer traffic via ATM communications channels and TDM communications channels. The telecommunications network includes at ...


5
George C Allen Jr, Haifeng Bi, Steven R Partridge, Samuel Sigarto, Richard W Stephenson: ATM-based distributed virtual tandem switching system. SBC Technology Resources, Greenblum & Bernstein, April 17, 2001: US06219348 (25 worldwide citation)

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 tandem switch. The system includes an ATM switching network that dynamically sets up individual switched virtual conne ...


6
Allen George C Jr, Bi Haifeng, Partridge Steven R, Sigarto Samuel, Stephenson Richard W: Systeme virtuel de commutation en tandem repartie, fonctionnant sur la base du mode de transfert asynchrone, Atm-based distributed virtual tandem switching system. Sbc Technology Resources, At&T Labs, PERLEY ROBERTSON HILL & MCDOUGALL, November 11, 1999: CA2299438 (3 worldwide citation)

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 tandem switch. The system includes an ATM switching network that dynamically sets up individual switched virtual conne ...


7
Allen George C Jr, Bi Haifeng, Partridge S R, Sigarto S, Stephenson R W: Atm-based distributed virtual tandem switching system. Sbc Techn Res, March 28, 2001: EP1086550-A1 (2 worldwide citation)

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 tandem switch. The system includes an ATM switching network that dynamically sets up individual switched virtual conne ...


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Allen George C Jr, Bi Haifeng, Partridge Steven R, Sigarto Samuel, Stephenson Richard W: Atm-based distributed virtual tandem switching system. Sbc Technology Resources, September 11, 2001: TW454398 (2 worldwide citation)

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 tandem switch. The system includes an ATM switching network that dynamically sets up individual switched virtual conne ...


10
Haifeng Bi, Matthew Wayne Stafford, Tina M Sigarto: Secure ATM-based distributed virtual tandem switching system and method. SBC Technology Resources, Greenblum & Bernstein, November 14, 2006: US07136378 (1 worldwide citation)

A method for providing secure communications through a communications network comprising ATM channels and TDM channels. The communications network includes at least one closed user group of network elements configured to communicate with only other network elements in the closed user group. The meth ...