Method of communication through leased line in virtual private network
AssigneeNEC Corporation
InventorMasaki Hamano
Life of this patent
Estimating the term…
Abstract
When a leased line is incorporated in a virtual private network forming a composite communication network together with a public network, a service control point searches a data base to see what private branch exchanger is the closest to a caller, and establishes a communication path including the leased line in the composite communication network so that high quality economical communication is offered between the subscribers.
Claims13
A method for routing a communication path between a first subscriber and a second subscriber through a public network having service switching points and a service control point and a virtual private network having entry points and a leased line selectively coupled between said entry points, comprising the steps of:
- a) transferring a first identification number and a second identification number respectively assigned to said first subscriber and said second subscriber through at least one of said service switching points to said service control point;
- b) determining one of said entry points closest to said first subscriber and a routing number used in said virtual private network;
- c) providing said routing number to said one of said entry points through said public network, for routing a communication sub-path passing through said leased line in said virtual private network;
- and
- d) establishing said communication path having said communication sub-path between said first subscriber and said second subscriber.
Dependencies are inferred from the claim text.