MULTIPORT CONFERENCE CIRCUIT WITH VOICE LEVEL CODING

摘要

TITLE MULTIPORT CONFERENCE CIRCUIT WITH VOICE LEVEL CODING An improved conference circuit for use in a Pulse Code Modulation telephone switching system wherein a number of channels are combined so that a number of subscribers may participate in a common telephone conversation. The conference circuit is provided with a voice level coding arrangement whereby the voice level comparisons used in the speaker selection process are facilitated.