A technique used to improve bandwidth utilization of voice circuits. Through silence suppression, a mechanism senses periods of inactivity in a voice conversation and simply ceases sending data associated with that conversation, rather inserts the conversation of another speaker into that channel.Time-assignment speech interpolation (TASI) used this technique on long haul frequency-division multiplexed (FDM) analog voice circuits. In contemporary digital networks, digital speech interpolation (DSI) uses silence suppression. See also DSI, FDM, suppression, and TASI.
Encoding the start and stop times of silence (lack of voice) in order to eliminate wasted bandwidth when sending voice over a packet-switched system.