Patents by Inventor Partho Pratim Mishra
Partho Pratim Mishra has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7301964Abstract: Signaling messages are exchanged for a call between a calling party to a called party. A setup message for the call is exchanged through at least one gate controller. Network resources are reserved for the call based on the exchanged setup messages. An end-to-end message for the call is exchanged without the end-to-end message being routed through the at least one gate controller.Type: GrantFiled: September 30, 2005Date of Patent: November 27, 2007Assignee: AT&T Corp.Inventors: Pawan Goyal, Albert Gordon Greenberg, Partho Pratim Mishra, Kadangode K. Ramakrishnan
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Patent number: 7289490Abstract: Gates for a call between a calling party and a called party are coordinated. A timer associated with a first gate opened at an originating network edge device is initiated. A first gate open message is sent from the originating network edge device to the terminating network edge device. The first gate at the originating network edge device is released if the timer expires before at least one from the group of: (1) an acknowledgment based on the sent first gate open message is received from the terminating network edge device, and (2) a second gate open message is received at the originating network edge device from the terminating network edge device after the terminating network edge device has opened a second gate associated with the called party.Type: GrantFiled: June 22, 2004Date of Patent: October 30, 2007Assignee: AT&T Corp.Inventors: Charles Robert Kalmanek, Jr., William Todd Marshall, Partho Pratim Mishra, Douglas M. Nortz, Kadangode K. Ramakrishnan
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Patent number: 7274662Abstract: Segmented resource reservation is performed for at least one call. Network resources associated with a first network are reserved according to that network's own reservation policy and based on an indication from a calling party. For the at least one call, network resources associated with a second network are reserved according to its own reservation policy and based on an indication from a called party. The second network is coupled to the first network.Type: GrantFiled: December 22, 1999Date of Patent: September 25, 2007Assignee: AT&T Corp.Inventors: Charles Robert Kalmanek, Jr., William Todd Marshall, Partho Pratim Mishra, Douglas M Nortz, Kadangode K. Ramakrishnan
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Patent number: 7245610Abstract: Gates a call between a calling party and a called party are coordinated. A timer associated with a first opened at an originating network edge device is initiated. A first gate open message is sent from the originating network edge device to the terminating network edge device. The first gate at the originating network edge device is released if the timer expires before at least one from the group of: (1) an acknowledgment based on the sent first gate open message is received from the terminating network edge device, and (2) a second gate open message is received at the originating network edge device from the terminating network edge device after the terminating network edge device has opened a second gate associated with the called party.Type: GrantFiled: May 25, 2004Date of Patent: July 17, 2007Assignee: AT&T Corp.Inventors: Charles Robert Kalmanek, Jr., William Todd Marshall, Partho Pratim Mishra, Douglas M Nortz, Kadangode K. Ramakrishnan
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Patent number: 7206397Abstract: Network resources for a call between a calling party and a called party are allocated. The network resources for the call are reserved based on a reservation request. In particular, the network resources for the call are reserved based on a reservation request. Prior to the reservation request being made, one or more operational parameters for the call are established by a gate controller and sent to a network edge device or other routing entity associated with one of the parties. An identifier, illustratively a so-called gate identification, is sent to that party. Thereafter the routing entity receives the identifier from the associated party in, for example, the aforementioned resource reservation request. The routing entity is able is able to use the identifier to determine the one or more parameters established for the call and to thereupon cause the call to be established—including the reserving of resources—in a way that is consistent with the one or more parameters.Type: GrantFiled: July 5, 2005Date of Patent: April 17, 2007Assignee: AT&T Corp.Inventors: Charles Robert Kalmanek, Jr., William Todd Marshall, Partho Pratim Mishra, Douglas M. Nortz, Kadangode K. Ramakrishnan
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Patent number: 7151772Abstract: Lawfully-authorized electronic surveillance is performed. A call associated with a first party to be surveilled is verified, on a per-call basis. Packets associated with the call are multicast to a second party and to a surveillance receiver.Type: GrantFiled: December 22, 1999Date of Patent: December 19, 2006Assignee: AT&T Corp.Inventors: Charles Robert Kalmanek, Jr., William Todd Marshall, Partho Pratim Mishra, Douglas M Nortz, Kadangode K. Ramakrishnan
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Patent number: 7027581Abstract: Signaling messages are exchanged for a call between a calling party to a called party. A setup message for the call is exchanged through at least one gate controller. Network resources are reserved for the call based on the exchanged setup messages. An end-to-end message for the call is exchanged without the end-to-end message being routed through the at least one gate controller.Type: GrantFiled: November 21, 2003Date of Patent: April 11, 2006Assignee: AT&T Corp.Inventors: Charles Robert Kalmanek, Jr., William Todd Marshall, Partho Pratim Mishra, Douglas M. Nortz, Kadangode K. Ramakrishnan
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Patent number: 6999474Abstract: Signaling messages are exchanged for a call between a calling party to a called party. A setup message for the call is exchanged through at least one gate controller. Network resources are reserved for the call based on the exchanged setup messages. An end-to-end message for the call is exchanged without the end-to-end message being routed through the at least one gate controller.Type: GrantFiled: July 21, 2004Date of Patent: February 14, 2006Assignee: AT&T Corp.Inventors: Pawan Goyal, Albert Gordon Greenberg, Partho Pratim Mishra, Kadangode K. Ramakrishnan
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Patent number: 6983040Abstract: A call is forwarded by connecting the call between an originating location and a forwarding location without connecting the call through a terminating location. The originating location is associated with a calling party. The terminating location is associated with a dialed number. The terminating location and the forwarding location is associated with the called party. A bill for the call is apportioned between the calling party and the called party. The bill portion for the calling party is a function of the originating location and the terminating location. The bill portion for the called party is a function of the terminating location and the forwarding location.Type: GrantFiled: February 20, 2003Date of Patent: January 3, 2006Assignee: AT & T Corp.Inventors: Charles Robert Kalmanek Jr., William Todd Marshall, Partho Pratim Mishra, Douglas M Nortz, Kadangode K. Ramakrishnan
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Patent number: 6915421Abstract: State information for a call between a calling party and a called party is established without maintaining the state information at a gate controller. A setup request for the call is received at an originating gate controller. The originating gate controller is connected to a trusted network. The calling party is associated with an originating interface unit coupled to an untrusted network. The setup request for the call is authorized. The authorized setup request is sent to the called party. State information for the call is formatted based on a setup acknowledgment message received from the calling party. The state information for the call is sent from the originating gate controller to the originating interface unit without maintaining the state information at the originating gate controller.Type: GrantFiled: November 14, 2003Date of Patent: July 5, 2005Assignee: AT&T Corp.Inventors: Charles Robert Kalmanek Jr., William Todd Marshall, Partho Pratim Mishra, Douglas M Nortz, Kadangode K. Ramakrishnan
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Patent number: 6894973Abstract: An apparatus and a smethod providing fair bandwidth sharing by adjusting video image quality in a data packet network comprises a network load detection means for detecting a network load and a video encoding control circuit. The network load has an uncongested state, a loaded state, and a congested state. The video encoding control circuit adjusts a video quality to a target video quality, by increasing the video quality when the network load is in the uncongested state and decreasing the video quality when the network load is in the congested state. The video quality is determined as a peak mean squared error between an uncompressed image and a corresponding decoded image. The network load is detected by using a forward explicit congestion notification bit.Type: GrantFiled: July 19, 2002Date of Patent: May 17, 2005Assignee: AT&T Corp.Inventor: Partho Pratim Mishra
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Patent number: 6870845Abstract: A call between a first network associated with a calling party and a second network associated with a called party is connected. The source address for packets associated with the call arc translated. The packets are sent from the calling party to the called party without the called party receiving the source address that indicates at least one from the group of a logical identity of the calling party and a geographical identity of the calling party.Type: GrantFiled: August 4, 1999Date of Patent: March 22, 2005Assignee: AT&T Corp.Inventors: Steven Michael Bellovin, Charles Robert Kalmanek, Jr., William Todd Marshall, Partho Pratim Mishra, Douglas M Nortz, Kadangode K. Ramakrishnan
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Patent number: 6823059Abstract: Network resources for a call between a calling party and a called party are allocated. The network resources for the call are reserved based on a reservation request. The network resources are reserved before any one network resource from the reserved network resources is committed. The reserved network resources for the call are committed when a called party indicates acceptance for the call.Type: GrantFiled: June 24, 2002Date of Patent: November 23, 2004Assignee: AT&T Corp.Inventors: Charles Robert Kalmanek, Jr., William Todd Marshall, Partho Pratim Mishra, Douglas M. Nortz, Kadangode K. Ramakrishnan
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Patent number: 6785233Abstract: Signaling messages are exchanged for a call between a calling party to a called party. A setup message for the call is exchanged through at least one gate controller. Network resources are reserved for the call based on the exchanged setup messages. An end-to-end message for the call is exchanged without the end-to-end message being routed through the at least one gate controller.Type: GrantFiled: December 16, 1999Date of Patent: August 31, 2004Assignee: AT&T Corp.Inventors: Pawan Goyal, Albert Gordon Greenberg, Partho Pratim Mishra, Kadangode K. Ramakrishnan
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Patent number: 6757290Abstract: Gates for a call between a calling party and a called party are coordinated. A timer associated with a first gate opened at an originating network edge device is initiated. A first gate open message is sent from the originating network edge device to the terminating network edge device. The first gate at the originating network edge device is released if the timer expires before at least one from the group of: (1) an acknowledgment based on the sent first gate open message is received from the terminating network edge device, and (2) a second gate open message is received at the originating network edge device from the terminating network edge device after the terminating network edge device has opened a second gate associated with the called party.Type: GrantFiled: August 4, 1999Date of Patent: June 29, 2004Assignee: AT&T Corp.Inventors: Charles Robert Kalmanek, Jr., William Todd Marshall, Partho Pratim Mishra, Douglas M Nortz, Kadangode K. Ramakrishnan
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Patent number: 6748070Abstract: Network resources for a call between a calling party and a called party are allocated. The network resources for the call are reserved based on a reservation request. The network resources are reserved before any one network resource from the reserved network resources is committed. The reserved network resources for the call are committed when a called party indicates acceptance for the call.Type: GrantFiled: June 24, 2002Date of Patent: June 8, 2004Assignee: AT&T Corp.Inventors: Charles Robert Kalmanek, Jr., William Todd Marshall, Partho Pratim Mishra, Douglas M Nortz, Kadangode K Ramakrishnan
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Patent number: 6694429Abstract: State information for a call between a calling party and a called party is established without maintaining the state information at a gate controller. A setup request for the call is received at an originating gate controller. The originating gate controller is connected to a trusted network. The calling party is associated with an originating interface unit coupled to an untrusted network. The setup request for the call is authorized. The authorized setup request is sent to the called party. State information for the call is formatted based on a setup acknowledgment message received from the calling party. The state information for the call is sent from the originating gate controller to the originating interface unit without maintaining the state information at the originating gate controller.Type: GrantFiled: August 4, 1999Date of Patent: February 17, 2004Assignee: AT&T Corp.Inventors: Charles Robert Kalmanek, Jr., William Todd Marshall, Partho Pratim Mishra, Douglas M Nortz, Kadangode K. Ramakrishnan
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Patent number: 6577718Abstract: A call is forwarded by connecting the call between an originating location and a forwarding location without connecting the call through a terminating location. The originating location is associated with a calling party. The terminating location is associated with a dialed number. The terminating location and the forwarding location is associated with the called party. A bill for the call is apportioned between the calling party and the called party. The bill portion for the calling party is a function of the originating location and the terminating location. The bill portion for the called party is a function of the terminating location and the forwarding location.Type: GrantFiled: December 22, 1999Date of Patent: June 10, 2003Assignee: AT&T Corp.Inventors: Charles Robert Kalmanek, Jr., William Todd Marshall, Partho Pratim Mishra, Douglas M Nortz, Kadangode K. Ramakrishnan
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Patent number: 6574335Abstract: A ring back signal for a call between a calling party and a called party can be simulated. A ring back message associated with the call is received. The calling party is associated with a first network. The called party is associated with a second network. A prestored ring back signal is selected from a set of prestored ring back signals based on the ring back message and/or a called number for the call. The selected prestored ring back signal is associated with the second network and is different from a second prestored ring back signal associated with the first network. The prestored ring back signal is sent to the calling party.Type: GrantFiled: December 22, 1999Date of Patent: June 3, 2003Assignee: AT&T Corp.Inventors: Charles Robert Kalmanek, Jr., William Todd Marshall, Partho Pratim Mishra, Douglas M Nortz, Kadangode K. Ramakrishnan
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Publication number: 20030007622Abstract: Network resources for a call between a calling party and a called party are allocated. The network resources for the call are reserved based on a reservation request. The network resources are reserved before any one network resource from the reserved network resources is committed. The reserved network resources for the call are committed when a called party indicates acceptance for the call.Type: ApplicationFiled: June 24, 2002Publication date: January 9, 2003Inventors: Charles Robert Kalmanek, William Todd Marshall, Partho Pratim Mishra, Douglas M. Nortz, Kadangode K. Ramakrishnan