Abstract: A technique for creating, training, and using a telecommunication network-based automatic voice-dialing system is provided through the automatic determination, by a network element, of likely called parties for a given customer. This determination is made based on records of network usage by the customer. Names of the likely called parties are determined through the use of, e.g., a conventional reverse telephone directory database.

Abstract: In order to reduce the signal loss in a telephone line switching and conferencing system there is interposed between each line and the switching matrix a monobus port circuit arranged to convert a transmitted telephone signal into an equivalent current source. The currents from several monobus circuits are added in a bus resistor before distribution back to the individual monobus circuit as a voltage where the original signal is subtracted from the bus signal. The resultant signal is transmitted to the telephone receiver. When the switching matrix crosspoint resistance is negligible, the component of the bus voltage measured at the current source output which results from current generated from each line is equal and opposite in magnitude to the voltage generated in the line. In any given line these voltages cancel each other, thereby eliminating the feedback signal.