The above objects can be attained by a system that creates system-created events at an optimal time independent of the billing process, and performs a continuous pricing process so that as events become available to the system they can be priced and summarized in real-time, allowing the billing process to be performed more efficiently. When the Fermi level does not swing through this area in any region of operation of the device, subthreshold stretchout of the I-V curves does not occur. Testing capabilities may be incorporated into a power line carrier receiver and use the connections between the pick-up coils and the receiver to perform the pick-up coil test. Alternately, a connection release message with a call redirection cause can be received.