Patents by Inventor Purnendu Dhal

Purnendu Dhal 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).

  • Emergency call back for remote workers
    Patent number: 10225401
    Abstract: A fingerprint is received from a communication endpoint. The fingerprint is based on a hardware identifier of the communication endpoint. For example the fingerprint may be based on a Media Access Control (MAC) address of the communication endpoint. A request for an emergency call from the communication endpoint is received that also includes the fingerprint. For instance, a user may initiate a 911 call from the communication endpoint. The emergency call is established. After the emergency call is disconnected, a request for an emergency call back is received. For example, if the emergency call prematurely disconnected, the emergency call back is initiated. The request for the emergency call back is routed to the communication endpoint based on the fingerprint to ensure that the emergency call is properly completed.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: March 5, 2019
    Assignee: Avaya Inc.
    Inventors: Manish Chatterjee, Purnendu Dhal, Harsh V. Mendiratta
  • Emergency call back for session initiation protocol sessions
    Patent number: 9979754
    Abstract: An Address Resolution Protocol (ARP) process receives a first Internet Protocol (IP) address that is associated with a Media Access Control (MAC) address of a communication endpoint. A first Session Initiation Protocol (SIP) INVITE for an emergency call request is received from the communication endpoint. The ARP process receives a second IP address that is associated with the MAC address of the communication endpoint. A second SIP INVITE is received that is a request for an emergency call back. The second SIP INVITE is routed to the communication endpoint based on the second IP address associated with the MAC address of the communication endpoint to reestablish the emergency call with the communication endpoint.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: May 22, 2018
    Assignee: Avaya Inc.
    Inventors: Harsh V. Mendiratta, Manish Chatterjee, Purnendu Dhal
  • EMERGENCY CALL BACK FOR REMOTE WORKERS
    Publication number: 20170251105
    Abstract: A fingerprint is received from a communication endpoint. The fingerprint is based on a hardware identifier of the communication endpoint. For example the fingerprint may be based on a Media Access Control (MAC) address of the communication endpoint. A request for an emergency call from the communication endpoint is received that also includes the fingerprint. For instance, a user may initiate a 911 call from the communication endpoint. The emergency call is established. After the emergency call is disconnected, a request for an emergency call back is received. For example, if the emergency call prematurely disconnected, the emergency call back is initiated. The request for the emergency call back is routed to the communication endpoint based on the fingerprint to ensure that the emergency call is properly completed.
    Type: Application
    Filed: February 25, 2016
    Publication date: August 31, 2017
    Inventors: Manish Chatterjee, Purnendu Dhal, Harsh V. Mendiratta
  • EMERGENCY CALL BACK FOR SESSION INITIATION PROTOCOL SESSIONS
    Publication number: 20170251027
    Abstract: An Address Resolution Protocol (ARP) process receives a first Internet Protocol (IP) address that is associated with a Media Access Control (MAC) address of a communication endpoint. A first Session Initiation Protocol (SIP) INVITE for an emergency call request is received from the communication endpoint. The ARP process receives a second IP address that is associated with the MAC address of the communication endpoint. A second SIP INVITE is received that is a request for an emergency call back. The second SIP INVITE is routed to the communication endpoint based on the second IP address associated with the MAC address of the communication endpoint to reestablish the emergency call with the communication endpoint.
    Type: Application
    Filed: February 25, 2016
    Publication date: August 31, 2017
    Inventors: Harsh V. Mendiratta, Manish Chatterjee, Purnendu Dhal