Patents Assigned to Hong Kong Telecommunications Limited
  • Telephone services
    Patent number: 6023504
    Abstract: A UIFN toll free service is provided and controlled by control units 11 and 12 that communicate with each other using a separate data networks. The control units arrange the connection of calls on a telephone network. The calls are monitored and billing created for appropriate UIFN customers by the control units. In one embodiment, each call is established by a TNO control unit, as if the customer had initiated the toll free call. Such calls are then treated automatically, especially for billing, as normal IDD calls made by the TNO customer.
    Type: Grant
    Filed: November 3, 1997
    Date of Patent: February 8, 2000
    Assignee: Hong Kong Telecommunications Limited
    Inventor: David Connolly