Bidirectional extension techniques for USB andor other similar bussesconnections are described in which an interface is provided to enable bidirectional communication with connected devices. It has been discovered that the calibration can vary widely, depending on when during the heating cycle it is performed. Members of the cluster family determine which family member is in the best position to obtain replicated information and become cumulatively consistent within their cluster family. The signal contacts extend into the receiving areas in a universal serial bus electrical conductor location configuration. Hence, a subscriber can record personalized greeting for preferred callers such that when a preferred caller reaches the subscriber’s voice mail, the personalized greeting for that caller is played.