Patent ID: 6175622
Filing Date: 2001-01-16
Classification: H04Q

Abstract:
In a telecommunications network including a service switch point, a service control point, and a first and second telephone, a method for providing a virtual private network for the first and second telephone comprising the steps of:storing an identifier for the first telephone in a memory accessible by the service control point;receiving a first dialed number from the first telephone into the service switch point;querying the service control point to determine if the identifier for the first telephone is in the memory;if the identifier for the first telephone is in the memory, interpreting the first dialed number to a second dialed number, the second dialed number being assigned to the second telephone;providing the second dialed number to the service switch point;instructing the service switch point to connect the first and second telephones using the second dialed number; andif the first and second telephones have disconnected an the first telephone dials a third telephone:receiving a third dialed number from the first telephone into the service switch point;querying the service control point to determine if the identifier for the first telephone is in the memory;if the identifier for the first telephone is in the memory, interpreting the third dialed number to a fourth dialed number, the fourth dialed number being assigned to the third telephone, and the third dialed number being a subset of the first and second dialed number;providing the fourth dialed number to the service switch point;instructing the service switch point to connect the first and third telephones using the fourth dialed number.