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  • Method and apparatus for supporting on-net VoIP calls for cellular service subscribers
    Patent number: 8615004
    Abstract: A method and apparatus for enabling a subscriber of VoIP services to register a cellular phone as an on-net device with a defined interface to the VoIP network are disclosed. The present method enables calls placed between originating and terminating subscribers using registered cellular phones to be rerouted between the cellular networks and the VoIP network for call establishment.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: December 24, 2013
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Marian Croak, Hossein Eslambolchi
  • Method and apparatus for providing internet protocol connectivity without consulting a domain name system server
    Publication number: 20070091879
    Abstract: A method and apparatus for enabling a packet network provider, e.g., a VoIP network provider to cache the IP address of the VoIP network entry point into a configuration file that can be downloaded to VoIP endpoint devices on a periodic basis are disclosed. Therefore, users of the VoIP services will be able to access the VoIP network despite DNS server failures that may be occurring in the broadband access networks.
    Type: Application
    Filed: September 30, 2005
    Publication date: April 26, 2007
    Inventors: Marian Croak, Hossein Eslambolchi
  • METHOD AND APPARATUS FOR RECONFIGURING NETWORK ROUTES
    Publication number: 20100085897
    Abstract: A method and apparatus for ensuring that every path in an IP network that interconnects a pair of VoIP network elements comprises diverse network routes and is engineered with adequate bandwidth to support VoIP phone calls are disclosed. In the event that a single point of failure or inadequate bandwidth is detected between a pair of VoIP network elements, an alarm is issued and network engineers are notified to reconfigure the routes between the VoIP network element pair.
    Type: Application
    Filed: December 8, 2009
    Publication date: April 8, 2010
    Inventors: Marian Croak, Hossein Eslambolchi
  • Method and apparatus for reconfiguring network routes
    Patent number: 7639793
    Abstract: A method and apparatus for ensuring that every path in an IP network that interconnects a pair of VoIP network elements comprises diverse network routes and is engineered with adequate bandwidth to support VoIP phone calls are disclosed. In the event that a single point of failure or inadequate bandwidth is detected between a pair of VoIP network elements, an alarm is issued and network engineers are notified to reconfigure the routes between the VoIP network element pair.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: December 29, 2009
    Assignee: AT&T Corp.
    Inventors: Marian Croak, Hossein Eslambolchi
  • Method and apparatus for enabling the receipt of phone calls behind a network address translation device
    Patent number: 8737381
    Abstract: A method and apparatus for enabling users behind NAT devices to receive unsolicited VoIP calls by allowing the VoIP network to dynamically open a temporary tunnel between the users' VoIP endpoint and the VoIP network for the subscriber to receive call set up messages and media streams from other callers are disclosed. An unsolicited call is a call that can be originated from any calling party endpoint. Once the call is finished, the temporary tunnel will be closed.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: May 27, 2014
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Marian Croak, Hossein Eslambolchi
  • Method and apparatus for enabling local survivability during network disruptions
    Publication number: 20060251052
    Abstract: A method and apparatus for enabling a network-based solution for enterprise customers that is integrated with premise-based equipment is disclosed. The premise-based solution can be quickly enabled in the event that the primary network, e.g., VoIP network, connectivity is lost. The premise-based equipment, e.g. a VoIP switch, can be minimally configured and equipped to play the role of a hot standby proxy for network based VoIP services if connection to the primary VoIP network is lost. Intelligent services typically accessed in network based VoIP services can be enabled on the premise equipment and VoIP gateways to an alternate network, e.g., a WAN or a PSTN, can be activated. Network operators can remotely activate this equipment on behalf of the enterprise customer until the primary network connection is restored.
    Type: Application
    Filed: April 19, 2005
    Publication date: November 9, 2006
    Inventors: Marian Croak, Hossein Eslambolchi
  • Method and apparatus for providing enhanced 911 for nomadic users
    Publication number: 20070081635
    Abstract: A method and apparatus for providing a Global Positioning System (GPS) tracking device to be integrated with a VoIP endpoint device and a subscriber's current GPS positioning data to be associated with the subscriber's telephone number are disclosed. The present invention enables a VoIP service provider to route a E911 call from a subscriber to the appropriate Public Safety Answering Point (PSAP) based on the current GPS positioning data of the subscriber's VoIP endpoint device. Moreover, the GPS positioning data will be sent to the PSAP as part of the E911 call.
    Type: Application
    Filed: September 29, 2005
    Publication date: April 12, 2007
    Inventors: Marian Croak, Hossein Eslambolchi
  • METHOD AND APPARATUS FOR ENABLING DUAL TONE MULTI-FREQUENCY SIGNAL PROCESSING IN THE CORE VOICE OVER INTERNET PROTOCOL NETWORK
    Publication number: 20110188495
    Abstract: The invention provides a method and apparatus for enabling DTMF signal processing in the core VoIP network. More specifically, the present invention enables a VoIP network to recognize and respond to special DTMF signals entered by a user and initiate the appropriate service logic response to satisfy the user's service request.
    Type: Application
    Filed: April 11, 2011
    Publication date: August 4, 2011
    Inventors: Marian Croak, Hossein Eslambolchi
  • METHOD AND APPARATUS FOR PROVIDING USER ACCESS VIA MULTIPLE PARTNER CARRIERS FOR INTERNATIONAL CALLS
    Publication number: 20100246572
    Abstract: A method and apparatus for providing subscribers of a VoIP service provider to take advantage of wholesale arrangements made by the VoIP service provider with one or more international partner carrier network providers to one or more international countries are disclosed. Specifically, the present method enables a VoIP service provider to display a web page to their subscribers, for each destination country, with one or more international partner network providers and their corresponding calling rates and/or call completion success rates to each particular destination country.
    Type: Application
    Filed: June 4, 2010
    Publication date: September 30, 2010
    Inventors: Marian Croak, Hossein Eslambolchi
  • Method and apparatus for porting telephone numbers of endpoint devices
    Patent number: 7881289
    Abstract: The present invention enables a capability for automatically porting the telephone number of the original VoIP endpoint device to the user's new VoIP endpoint device by re-associating the original telephone number with the MAC address of the new IP endpoint device.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: February 1, 2011
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Marian Croak, Hossein Eslambolchi
  • Method and apparatus for providing user access via multiple partner carriers for international calls
    Patent number: 7734024
    Abstract: A method and apparatus for providing subscribers of a VoIP service provider to take advantage of wholesale arrangements made by the VoIP service provider with one or more international partner carrier network providers to one or more international countries are disclosed. Specifically, the present method enables a VoIP service provider to display a web page to their subscribers, for each destination country, with one or more international partner network providers and their corresponding calling rates and/or call completion success rates to each particular destination country.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: June 8, 2010
    Assignee: AT&T Corp.
    Inventors: Marian Croak, Hossein Eslambolchi
  • Method and apparatus for enabling international toll free calls using peering arrangements
    Patent number: 7995739
    Abstract: The present invention enables retailers who use toll free services provided by a VoIP network service provider to obtain peering arrangements with international and domestic VoIP carriers to originate, terminate, and bridge multiple call legs among global locations across peering partner carriers.
    Type: Grant
    Filed: December 27, 2004
    Date of Patent: August 9, 2011
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Marian Croak, Hossein Eslambolchi
  • Method and apparatus for providing user access via multiple partner carriers for international calls
    Patent number: 8538005
    Abstract: A method and apparatus for providing subscribers of a VoIP service provider to take advantage of wholesale arrangements made by the VoIP service provider with one or more international partner carrier network providers to one or more international countries are disclosed. Specifically, the present method enables a VoIP service provider to display a web page to their subscribers, for each destination country, with one or more international partner network providers and their corresponding calling rates and/or call completion success rates to each particular destination country.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: September 17, 2013
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Marian Croak, Hossein Eslambolchi
  • Method and apparatus for enabling dual tone multi-frequency signal processing in the core voice over internet protocol network
    Patent number: 7924814
    Abstract: The invention provides a method and apparatus for enabling DTMF signal processing in the core VoIP network. More specifically, the present invention enables a VoIP network to recognize and respond to special DTMF signals entered by a user and initiate the appropriate service logic response to satisfy the user's service request.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: April 12, 2011
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Marian Croak, Hossein Eslambolchi
  • Method and apparatus for monitoring of access network status in communication networks
    Patent number: 8670323
    Abstract: A method and apparatus for enabling a tool to collect alerting information of network disruptions across access networks external to a packet network, e.g., a VoIP network, is disclosed. By monitoring the status of external access networks, service disruptions in the VoIP network that can be potentially caused by such access networks can be anticipated, prevented, diagnosed and/or resolved rapidly.
    Type: Grant
    Filed: April 19, 2005
    Date of Patent: March 11, 2014
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Marian Croak, Hossein Eslambolchi
  • Method and apparatus for monitoring and restoring time division multiplexing circuits
    Patent number: 7933213
    Abstract: A method and apparatus for proactively managing TDM circuits used in a packet network, e.g., a VoIP network, by allowing it to instruct a program to periodically test the health of all circuits catalogued in the TDM facility database are disclosed. If a circuit is found to be out of service, the present invention will trigger a maintenance action through the edge component of the VoIP network to reset the circuit and restore it to a healthy condition.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: April 26, 2011
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Marian Croak, Hossein Eslambolchi
  • METHOD AND APPARATUS FOR MONITORING AND THE PREVENTION OF CALL STORMS IN A COMMUNICATIONS NETWORK
    Publication number: 20090323551
    Abstract: The present invention allows monitoring and the prevention of call storms in a communications network, e.g., a VoIP network. More specifically, the present invention enables a VoIP network to monitor the calling pattern, e.g., the number of calls within a period of time that occurs between the same endpoints. If the number of calls exceed a certain threshold, then these calls with the same endpoints will be terminated and an alarm notification will be sent, e.g., to a network operator.
    Type: Application
    Filed: September 3, 2009
    Publication date: December 31, 2009
    Inventors: Marian Croak, Hossein Eslambolchi
  • METHOD AND APPARATUS FOR PROVIDING DYNAMIC INTERNATIONAL CALLING RATES
    Publication number: 20120188913
    Abstract: A method and apparatus for enabling VoIP service providers to dynamically adjust international calling rates as a function of adjustments made with partner carrier arrangements that VoIP service providers put in place are disclosed. Thus VoIP service providers can pass on savings, if the new calling rate is lower than the old calling rate, to their subscribers in order to enhance the loyalty of existing subscribers. Instead of having subscribers to call into customer service centers to take advantage of these new lower international calling rates, the new calling rates will be updated dynamically and immediately for subscribers without these subscribers having to call in to request their billing rates to match the new calling rates.
    Type: Application
    Filed: April 2, 2012
    Publication date: July 26, 2012
    Inventors: Marian Croak, Hossein Eslambolchi
  • Method and apparatus for providing secure interface to externally hosted application servers
    Patent number: 7852832
    Abstract: A method and apparatus for enabling a network provider to provide a security server in a packet network, e.g., a VoIP network that allows a third party partner to interface an application server hosted in the third party's network with the VoIP network infrastructure are disclosed. The security server provides the appropriate level of network address translations, firewall support, content filtering, and validation for the third party application server.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: December 14, 2010
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Marian Croak, Hossein Eslambolchi
  • Method and apparatus for enabling dual tone multi-frequency signal processing in the core voice over internet protocol network
    Patent number: 8675638
    Abstract: The invention provides a method and apparatus for enabling DTMF signal processing in the core VoIP network. More specifically, the present invention enables a VoIP network to recognize and respond to special DTMF signals entered by a user and initiate the appropriate service logic response to satisfy the user's service request.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: March 18, 2014
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Marian Croak, Hossein Eslambolchi
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