Access (or egress) charges payable by an IXC to a LEC, and payable by the subscriber to the LEC for originating or terminating calls and for associated vertical call control features, are reduced or eliminated by providing a virtual piped collection that "bypasses" and thus does not require the involvement...http://www.google.de/patents/US5533111?utm_source=gb-gplus-sharePatent US5533111 - System for originating and receiving telephone calls over a virtual piped connection, and specialized customer premise equipment for use in the system
