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US 2002/0173292 A1Published application
Call security system
AssigneeAtComm Corporation
InventorJohn T. Boatwright
Life of this patent
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AssigneeAtComm Corporation
InventorJohn T. Boatwright
Estimating the term…
A method and apparatus for reducing the vulnerability of the telecommunications system to unauthorized use that is easy to implement and that can reduce the instances of unauthorized access even during periods when telecommunications personnel are not able to give attention to the traffic on the system. The telecommunications system collects statistics of each user's pattern of telecommunications usage. Typically, these statistics will be in the form of, say, the average number of calls per day or the average number of calls per day on given days of the week. It may also include the mean busy hour for the given days of the week. Moreover, daily averages may be taken not only for all calls but also for all calls of a particular type, e.g., of all international calls. These statistics are taken for a reference period, such as the preceding thirty days, and the corresponding quantity for the current day is also computed. If the current statistics are not excessive as compared with the reference statistics, then access to a communications resource—e.g., an outgoing trunk line—is granted to the call without any supplemental access restrictions. But if a predetermined deviation is detected between the current statistics and the reference statistics, then a supplemental restriction is placed upon the call.
A communications facility connected to communications resources including at least one trunk line to receive, during a current period, calls identifying users from which the calls have ostensibly been made and requesting destinations to which connection requires respective required ones of the communications resources, the communications facility comprising:
An access-control module, adapted for connection to at least one internal, access-control line of a private branch exchange, connected to communications resources including trunk lines and the at least one access-control line, for connecting incoming calls on at least one of the trunk lines to the access-control line and for responding to destination-designating transfer signals from the access-control line by connecting the call connected thereto to a communications resource required for the destination that the transfer signal designates, the access-control module comprising:
An access-control module, adapted for connection to at least one internal, access-control line of a private branch exchange connected to communications resources including trunk lines and the at least one access-control line, for connecting incoming calls on at least one of the trunk lines to the access-control line and for responding to destination-designating transfer signals from the access-control line by connecting the call connected thereto to a communications resource required for the destination that the transfer signal designates, the access-control module comprising:
An access-control module, adapted for connection to at least one internal, access-control line of a private branch exchange connected to communications resources including trunk lines and the at least one access-control line, for connecting incoming calls on at least one of the trunk lines to the access-control line and for responding to destination-designating transfer signals from the access-control line by connecting the call connected thereto to a communications resource required for the destination that the transfer signals designates, the access-control module comprising:
For controlling connection to a communications resource required by a call received during a current period at a communications facility by way a trunk line connected to the facility, the call identifying a user from which the call has ostensibly been made, a method comprising the steps of:
Dependencies are inferred from the claim text.