Digital Speech Interpolation A means of transmitting telephony Two and One half to three times more efficiently based on the principle that people are talking only about 40% of the time
An algorithm that analyzes DS0 voice bits for non-speech codes Suppresses these bits to conserve packet line bandwidth and inserts a code to indicate to the far end that these bits have been removed Similar to DFM for data channels Also, referred to as VAD (Voice Activity Detection)