Abstract: A radio or telephone handset configured with the usual transmitter and receiver ends and connecting handle is designed to have physical characteristics well adapted in its acoustic characteristics to complement noise cancellation circuitry. The receiver speaker is mounted in the receiver cap, and the cap is built with a domed, apertured earpiece extending from the exterior surface of said receiver cap. The dome fits into a user's outer ear, thereby to aid in positioning said handset on a user's ear. Openings radially placed on said receiver cap exterior surface and surrounding said earpiece, define an acoustic grill through which signal from said receiver speaker is passed substantially directly to said user's ear canal. Noise absorbing material is placed at strategic locations within the handset interior.

Abstract: Disclosed is a cross-connect system, such as a feeder distribution interface for telecommunications. User and feeder wires are each coupled to two sides of the matrix in order to provide flexibility in the electrical path. The switches, which are of the double-pole, double-throw variety, are employed at selected crosspoints of the switch matrix in such a manner as to reduce the number of switches required.