Parameter Optimization Or Enhancement (e.g., Capacity Or Bandwidth) Patents (Class 379/221.07)
  • Patent number: 7366288
    Abstract: Method and apparatus for detecting inter-carrier call looping. In one embodiment, the present invention is a method that can be used to reliably detect inter-network routing loops and kill associated calls using a modified ISUP Hop Counter parameter to be sent across network boundaries. Detection of inter-network loops prevents routing loops, those involving two or more carrier networks, from generating additional signaling traffic that can aggregate to overload signaling networks.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: April 29, 2008
    Assignee: AT&T Corp.
    Inventor: Phu Khanh Huynh
  • Patent number: 7292687
    Abstract: A method of negotiating a call capability between signalling points in a telecommunications system. The method comprises sending a capability preference or prioritised list of preferences from an originating signalling point to a terminating signalling point or signalling transfer point, at the Call Control level. A capability acceptance is returned from the terminating signalling point or signalling transfer point to the originating signalling point at the Call Control level, if the terminating signalling point or signalling transfer point accepts a preference sent by the originating signalling point.
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: November 6, 2007
    Assignee: Telefoektiebolaget LM Ericsson (publ)
    Inventors: Leslie Graf, Paul Hollis, David De Nicolo, Christian Groves, Ian Rytina, Juan Noguera-Rodriguez, Mark Hollis, Nebosja Dikic, Stephen Terrill, Sune Ramström, Lars Kari, Barry Dingle
  • Patent number: 7286654
    Abstract: Congestion problems in networks are alleviated with a method that works toward insuring that unused capacity will always exist in elements of a network that are resources which are shared by a plurality of users and which, consequently, can be overloaded. In response to each request to establish a connection over a path in the network, pursuant to a predetermined algorithm the method services the request, declines to service the request, or services the request after dropping an established connection. In one embodiment, when unused capacity on the path is above a first preselected level, all requests are serviced. When unused capacity falls below a second preselected threshold, no requests are serviced. When unused capacity is between the first and second thresholds, an existing data connection is dropped if a requested connection is a voice connection and the number of existing data connections exceeds a preselected threshold.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: October 23, 2007
    Assignee: AT&T Corp.
    Inventors: Soohan Ahn, Vaidyanathan Ramaswami
  • Publication number: 20070223680
    Abstract: A system to automatically adjust an aspect of an environment with a limited number of service stations usable by customers. The system includes a sensor to provide a measurement based the present or expected the number of service stations used by a customer; a processor to determine a value representing the present or expected load on the limited number of service stations currently and to determine the appropriate change in the environment; and a regulator that adjusts an aspect of the environment to adjust the behavior of the customers in the environment. The system has been specifically designed to be incorporated into an environment with a limited number of service stations. As an example, the system may be incorporated in an establishment (such as a café, bar, or restaurant) with a limited number of seating spaces.
    Type: Application
    Filed: March 22, 2007
    Publication date: September 27, 2007
    Inventor: Jeffrey Schox
  • Patent number: 7254228
    Abstract: To support a changing volume of a voice-grade traffic in an access network having a local exchange with a limited capacity, provide two or more access networks each having subscribers and associated local exchange with a limited capacity; each capable of dividing traffic, outgoing from its subscribers, into the voice-grade traffic portion and data traffic portion, and capable of directing the data traffic portion to a packet network while directing the voice-grade traffic portion to a PSTN network via associated local exchange. Second, detecting the overload condition on one local exchange (LE1). Third, find a remaining one (LE2) of the local exchanges in normal load condition. Fourth, partially diverting the voice-grade traffic intended for the local exchange LE1 and passing the diverted voice-grade traffic to its destination via the packet network and the local exchange LE2.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: August 7, 2007
    Assignee: ECI Telecom Ltd.
    Inventors: Aharon Segev, Alexander Bronstein
  • Patent number: 7242755
    Abstract: A method and system are disclosed to provide a conference among conference participants over a communication network. A routing system receives conference utilization data from a plurality of conference systems. The routing system receives a request to join the conference from one of the conference participants. The routing system processes the conference utilization data in response to the request to select one of the conference systems. The one conference system joins the one participant to the conference in response to the selection of the one conference system.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: July 10, 2007
    Assignee: Sprint Communications Company L.P.
    Inventors: Warren B. Cope, Rakesh P. Samtani
  • Patent number: 7200141
    Abstract: Effective bandwidth of a communication link is determined in a heterogeneous, packet switched network between a source and a destination, where effective bandwidth is defined as the actual available bandwidth between the server and the client, minus the overhead of the various network protocols used to transmit the data. The method includes maintaining a database of bandwidth parameters indexed by destination address, and using the database when setting a communication channel.
    Type: Grant
    Filed: November 1, 2005
    Date of Patent: April 3, 2007
    Assignee: Adobe Systems Incorporated
    Inventor: Saurav Chatterjee
  • Patent number: 7194078
    Abstract: A system and apparatus within a communications server for intercepting supplemental service requests to a communications network and ensuring redirection to correct network party and optimal resource usage when redirecting a call over the network. The optimization system includes a database and database server software. A device/trunk handler is used to interface signalling channels to the optimization system. A monitoring and statistics unit monitors the signalling channels. The server software is responsive to the monitoring and statistics unit and selects the routing of the supplementary service through the appropriate server(s) in the network.
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: March 20, 2007
    Assignee: Siemens Communications, Inc.
    Inventor: Peggy M. Stumer
  • Patent number: 7162017
    Abstract: A method determines a threshold for increasing telephone line capacity in a telecommunications system. The method includes receiving a group of parameters that relate to at least one of a telephone line management policy (1030), environmental parameters (1020), and cost parameters (1010) and determining the threshold based on the received parameters.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: January 9, 2007
    Assignee: Verizon Laboratories Inc.
    Inventors: Roger L. Tobin, James H. Drew, Leslie D. Servi
  • Patent number: 7158627
    Abstract: A method includes receiving, at a softswitch executing on a computer, a plurality of calls for switching, monitoring at least one criteria associated with operation of the computer, and based on the monitoring, limiting the number of calls processed by the computer.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: January 2, 2007
    Assignee: Sonus Networks, Inc.
    Inventor: James J Lu
  • Patent number: 7130402
    Abstract: To extract part of a large volume of traffic and adjust the total volume of traffic dynamically. When a communication request is originated from a telecommunications apparatus, a communications control unit makes an inquiry to a service control unit. The service control unit screens originators based on originators' attribute information in its possession and service contract information. Then, based on the results of screening, it sends back to the communications control unit instructions to reroute subsequent calls. The communications control unit connects to the information processing unit based on the reply from the service control unit and transfers information. Thus, only the communication requests which satisfy predetermined criteria are connected. The information processing unit compiles statistics on the transferred information based on attribute information in its possession. The statistics are transferred to the information providing unit and to the information processing unit.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: October 31, 2006
    Assignee: NTT DoCoMo, Inc.
    Inventors: Fumiko Kawaguchi, Takashi Tosaki, Takeshi Sugiyama, Akira Kaiyama, Takanobu Yamamoto
  • Patent number: 7116767
    Abstract: An apparatus for controlling telephone communications through a communication switch during intervals of call traffic volume in excess of a threshold call traffic volume includes: (a) a call traffic volume sensing device coupled with the communication switch and measuring the call traffic volume during selected intervals; and (b) a call traffic control device coupled with at least one of the communication switch and the call traffic volume sensing device. The call traffic control device cooperates with the communication switch to involuntarily terminate selected calls through the communication switch when at least one selected parameter is exceeded. The at least one selected parameter includes the call traffic volume.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: October 3, 2006
    Assignee: Lucent Technologies Inc.
    Inventors: ZhongJin Yang, Jie Yao
  • Patent number: 7106847
    Abstract: In a telecommunication network, a switching system routes a call to a service platform. The service platform transfers a prompt message over the call, collects caller-entered information from a caller over the call in response to the prompt message, and transfers the caller-entered information to an SCP system. The SCP system transfers the caller-entered information to a destination processor, processes a destination routing code from the destination processor to determine a destination routing instruction, and transfers the destination routing instruction to the switching system. The switching system routes the call to a destination in response to the destination routing instruction.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: September 12, 2006
    Assignee: Sprint Communications Company L.P.
    Inventors: Carl E. Rogers, Joseph Brent Donelan, Lori L. Brown, Warren B. Cope, Xinjia Ma, Steven R. Marah, Jeffrey A. Bell
  • Patent number: 7068766
    Abstract: Congestion problems in networks are alleviated with a method that works toward insuring that unused capacity will always exist in elements of a network that are resources which are shared by a plurality of users and which, consequently, can be overloaded. In response to each request to establish a connection over a path in the network, pursuant to a predetermined algorithm the method services the request, declines to service the request, or services the request after dropping an established connection. In one embodiment, when unused capacity on the path is above a first preselected level, all requests are serviced. When unused capacity falls below a second preselected threshold, no requests are serviced. When unused capacity is between the first and second thresholds, an existing data connection is dropped if a requested connection is a voice connection and the number of existing data connections exceeds a preselected threshold.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: June 27, 2006
    Assignee: AT&T Corp.
    Inventors: Soohan Ahn, Vaidyanathan Ramaswami
  • Patent number: 7065203
    Abstract: According to one embodiment of the invention, a method for managing call requests in a limited bandwidth environment includes receiving a call request from a user, determining if a voice channel on a communication link is available for the call request, and providing a feedback signal for the user indicating when a voice channel will be available.
    Type: Grant
    Filed: May 7, 2001
    Date of Patent: June 20, 2006
    Assignee: Cisco Technology, Inc.
    Inventors: Pascal H Huart, Luke K Surazski, Michael E Knappe
  • Patent number: 7050555
    Abstract: A system and method for managing a carrier's interconnect traffic across a telecommunications network, the method involving receiving cost and routing rules from the carrier, gathering performance data corresponding to the interconnect traffic, applying the cost and routing rules to the performance data to determine a first impact on the interconnect traffic, receiving superseding routing rules from the carrier, automatically calculating proposed changes in network routing based on the superseding routing rules and the first impact, and presenting the proposed changes to the carrier.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: May 23, 2006
    Assignee: Telarix, Inc.
    Inventors: Shawn Zargham, Amir Yazdanpanah, Hormoz Hekmat
  • Patent number: 7043003
    Abstract: The invention relates to an apparatus and a method for improving the load distribution in a signaling network having a large number of signaling nodes (A, B) and a large number of signaling channels (L0, L1, L2, L3), with overloading in the signaling network being reliably prevented by taking account of a respective individual bandwidth (EBB0 to EBB3).
    Type: Grant
    Filed: April 17, 2000
    Date of Patent: May 9, 2006
    Assignee: Siemens Aktiengesellschaft
    Inventor: Claus Friedl
  • Patent number: 7009939
    Abstract: Methods and apparatus for allocating a system resource in a communication system having an interconnected set of modules and for which the system resource is allocated among the modules are disclosed. The interconnected set of modules may be a multi-shelf daisy-chained DSL access multiplexer (DSLAM), with each of the modules corresponding to a particular shelf of the DSLAM. The system resource is initially allocated among the modules in accordance with a predetermined allocation, e.g., a reserve pool is established with a first portion of the system resource and the remaining portion of the system resource is equally divided among the interconnected modules. The allocation of the system resource is then periodically updated based at least in part on measured characteristics of at least a subset of the modules, the measured characteristics being indicative of utilization of the initial allocation.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: March 7, 2006
    Assignee: Lucent Technologies Inc.
    Inventors: Albert D. Baker, John Donald Unruh
  • Patent number: 7010102
    Abstract: Method and apparatus for detecting inter-carrier call looping using a modified Hop Counter parameter.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: March 7, 2006
    Assignee: AT&T Corp.
    Inventor: Phu Khanh Huynh
  • Patent number: 6978007
    Abstract: The communications system has a transmission network for transmitting useful data and control data. Call numbers are input at a subscriber terminal. A subscriber line unit with an adjustable transmission characteristic is connected between the subscriber terminal and the transmission network. A recognition unit connected to the transmission network recognizes particular call number patterns and outputs particular control signals corresponding to call number patterns. A control unit connected between the recognition unit and the subscriber line unit sets the transmission characteristic of the subscriber line unit depending on the control signals provided by the recognition unit.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: December 20, 2005
    Assignee: Siemens Aktiengesellschaft
    Inventors: Gerald Höfer, Peter Caldera, Paul Kunisch
  • Patent number: 6978002
    Abstract: A routing system according to an embodiment of the invention dynamically routes a conference call to a selected conference system. The routing system includes a communication interface, a conference interface, and a processing system. The processing system accesses utilization statistics for the plurality of conference systems and includes a routing algorithm. The processing system is configured to receive a conference identifier of the conference call, process the conference identifier and the utilization statistics of the plurality of conference systems to select the selected conference system, and route the conference call to the selected conference system.
    Type: Grant
    Filed: May 13, 2003
    Date of Patent: December 20, 2005
    Assignee: Sprint Communications Company L.P.
    Inventors: Warren B. Cope, Rakesh P. Samtani
  • Patent number: 6947547
    Abstract: A management system for telecommunication switch is described. The management system is useful for providing operations, administration and maintenance (OAM) functions in a terabit switch. The management system is a scalable management system, whereby processing of large amounts of network management traffic from carrier operators and virtual private network (VPN) customers in a terabit switch is enabled. The management system is efficiently implemented by utilizing surplus processing resources in the network interface cards of the switch. The management system includes a protocol unit residing on a first processor card of the switch for receiving a management request, a first request unit residing on the first processor card for creating a request object in response to the received management request, and a first action unit residing on a first network interface card of the switch for executing the received management request in response to an instruction from the request object.
    Type: Grant
    Filed: March 27, 2001
    Date of Patent: September 20, 2005
    Assignee: Nortel Networks, Ltd.
    Inventors: Derek C. L. Cheung, Carson K. M. Cheung, Mircea Trifan
  • Patent number: 6931109
    Abstract: A communication network includes a network selection system and an enterprise system that are connected to a PSTN. The network selection system receives a connection request from the enterprise system through the PSTN network, identifies the enterprise system, retrieves a cost/performance profile of the enterprise system, retrieves ISP cost and performance information for each independent ISP of the plurality of independent ISPs, processes the ISP cost and performance information for each of the plurality of independent ISPs against the cost/performance profile, and selects the one independent ISP from among the plurality of independent ISPs based on the processing of the ISP cost and performance information against the cost/performance profile.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: August 16, 2005
    Assignee: Sprint Communications Company L.P.
    Inventor: Fred S. Cook
  • Patent number: 6885743
    Abstract: Software defined radios necessitate the routing of analog wireless signals between data links via a software circuit switching router implemented in a processor. Processor utilization by the software router is decreased by disabling the interrupts of all but one analog channel per communication link, this channel being termed the Anchor channel for its link. Data from all channels in the link is transferred during the Anchor link's interrupt. The increase in the Anchor channel's interrupt latency due to transferring data from other channels is more than offset by the overall reduction in the number of processor interrupts generated. As a result, utilization of the processor by the software router is reduced, allowing the processor to manage other time-critical tasks and/or a greater number of tasks in a given time period.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: April 26, 2005
    Assignee: Lucent Technologies Inc.
    Inventor: Mohammad Riaz Khawer
  • Patent number: 6862453
    Abstract: A controller that monitors usage status of trunk lines associated with a switch that operates to handle call connections between calling devices and called devices on trunk lines associated therewith. An exemplary controller comprises N call application nodes capable of executing trunk idle list server applications that allocate ones of the trunk lines to the call connections, wherein a first trunk idle list server application is executed on a first call application node and is associated with a second trunk idle list server application executed on a separate second call application node.
    Type: Grant
    Filed: December 31, 2001
    Date of Patent: March 1, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: David Allan Collins
  • Patent number: 6842788
    Abstract: A router can consider two color vectors for a path including multiple links through a network. One color vector indicates colors that all of the multiple links include. Another color vector indicates the colors that none of the multiple links include. In setting up a constraint-based label switched path (LSP), a router can use a program that includes a logical process. With the process, the router can automatically compute the color vectors for the path whenever the path of an LSP changes and/or the characteristics (colors) of one or more of the multiple links constituting the LSP changes. Computing whether the path is eligible for inclusion in the LSP includes calculating whether the path includes all colors that must be included in an LSP and calculating whether the path includes any of the colors that must be excluded from the LSP.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: January 11, 2005
    Assignee: Nortel Networks Limited
    Inventors: Anoop Ghanwani, Donald Fedyk
  • Patent number: 6829347
    Abstract: A method of selecting a trail using a Constraint based routing technique in which at least one user-determined routing policy is used to bias input to a Dijkstra/Yen-K shortest path routing engine, so as to limit output by the routine engine to routes conforming with the user-determined routing policy.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: December 7, 2004
    Assignee: Nortel Networks Limited
    Inventor: Sam Odiaka
  • Patent number: 6792098
    Abstract: An inter-network line level adjustment system includes a switch (SW1) and a processing unit (24) for identifying calls between a remote telephone network and a local telephone network. Echo cancellers (20) and/or speech coders (22) collect line level data associated with the identified calls. The processing unit (24) determines statistical properties of the collected line level data. Finally, the processing unit (24) instructs the echo cancellers (20) and/or speech coders (22) to adjust, based on the determined statistical properties, line levels of future calls between the remote telephone network and the local telephone network to a desired line level.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: September 14, 2004
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Tönu Trump, Anders Roxström
  • Publication number: 20040081308
    Abstract: A network element management system which can exploit the customized interface features of a variety of versions of a variety of complex system products from a variety of manufacturers. This is done by maintaining a meta-model, which is not itself a model until instantiated, of the possible known product configurations to be interfaced to. Once the meta-model is instantiated, it provides configuration parameters which the interface program uses to build a correct configuration for the management and/or monitoring interface. This is particularly advantageous in the preferred embodiment of a telecommunications network element management system, but also has potential applicability to other large “supersystem” applications.
    Type: Application
    Filed: May 14, 2003
    Publication date: April 29, 2004
    Applicant: Fujitsu Network Communications, Inc., a California corporation
    Inventors: Dharmendra Naik, Salim Galou, Gilbert Levesque, Rick Zaeh
  • Patent number: 6574326
    Abstract: A method and a system for reducing transmission of parameters between a-mobile switching center and a service control point in a telecommunication network such as the Wireless Intelligent Network. The mobile switching center transmits a first signaling message containing only a first set of parameters to the service control point during initial call processing. In response, the service control point transmits a second signaling message to the mobile switching center indicating to the service switching point a second set of parameters required by the service control point with respect to the first signaling message. The service switching point then transmits the second set of parameters in a third signaling message to the service control point in response to the second signaling message.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: June 3, 2003
    Assignee: Nokia Network Oy
    Inventors: Curt Wong, Jukka Wallenius
  • Publication number: 20030081748
    Abstract: A telephony network optimization system and method comprises receiving a request from an application to provide to the application service on a telephony network. The method also comprises automatically allocating to the application a channel on the telephony network to provide balanced network service in response to telephony parameters.
    Type: Application
    Filed: October 30, 2001
    Publication date: May 1, 2003
    Inventor: Greg J. Lipinski
  • Patent number: 6535582
    Abstract: A voice verification system (1) has a verification server layer (55) providing centralized verification for multiple service providers in geographically spread locations. Each service provider has an IVR (41) using a C++ DLL API (43) to communicate with a verification server (56, 57) via ISPs (45) and a switching system (50). Each API (43) dynamically determines an optimum ISP/server socket to minimize a verification cycle time. The switching system (50) has a router and two-stage switch combination with firewalls to provide optimum resilience in paths to the server (56, 57).
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: March 18, 2003
    Assignee: Buy-Tel Innovations Limited
    Inventor: Vance Harris
  • Patent number: 6507648
    Abstract: The invention is a novel method of processing incoming and outgoing call requests by a switching unit such as a KSU, PBX or PC server. Each established circuit and each call request is associated with a priority. For an outgoing call request, if an available external bandwidth channel of the appropriate type is found, then a circuit is established at once. However, if there is no available external bandwidth channel of the appropriate type, then the priority of the outgoing call request is checked against the priority of the established circuits. If a lower-priority circuit is found, then that circuit is torn down and a new circuit is established between the internal bandwidth channel carrying the outgoing call request and the external bandwidth channel formerly occupying the established circuit that was torn down. In the case of an incoming call request, a destination terminal device and associated internal bandwidth channels will be specified and availability thereof is verified.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: January 14, 2003
    Assignee: Nortel Networks Limited
    Inventors: Kevin W. Golka, John R. Donak, Lorne A. Porter
  • Patent number: 6421435
    Abstract: Planning alternative SS7 networks is a complex task requiring assistance from an intelligent planning tool. The tool provides a method for forecasting service loads including automatically obtaining network traffic information from the network. Service loads are estimated based on a first set of network traffic information and service descriptions. Correction factors are calculated for service loads based on a second set of network traffic information. The correction factors are applied to estimated service loads to determine peak loads for each STP in the core network based on network traffic, component locations, and component connectivity.
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: July 16, 2002
    Assignee: Qwest Communications International Inc.
    Inventors: Pierre L. Bastien, Stephen L. Bulick, Xiaojiang Lu, Victoria L. C. Okeson, Steve E. Showell
  • Patent number: 6345092
    Abstract: Outgoing trunks of a switch are divided into reserved trunks and non-reserved trunks. A controller seizes reserved trunks equally for calls from subscriber terminals regardless of whether a call is a reserved call or a non-reserved call in an uncongested condition in which rate of reserved-trunk utilization is low and seizes reserved trunks preferentially for reserved calls in a congested condition in which rate of reserved-trunk utilization is high.
    Type: Grant
    Filed: June 23, 1999
    Date of Patent: February 5, 2002
    Assignee: Fujitsu Limited
    Inventor: Rie Hoshi