This read-write value, 1 to 5, is the DVC-card equivalent of ifvceSilenceSuppress, setting how aggressively silent periods are attenuated and bandwidth is reduced during transmission. Because DVC cards use a narrower 1-to-5 scale rather than the 4-to-20 range of other cards, the same operational trade-off between call naturalness and bandwidth savings applies at a different granularity. For example, an administrator moving a voice port from a standard card to a DVC card would need to re-tune this object within its 1-to-5 range rather than reuse the old ifvceSilenceSuppress value.