This data informs a voice DSP what type of silence suppression algorithm to use on a channel. Silence suppression is used to suppress packet generation during periods of silence of a voice call. The SID (silence descriptor) frame is generated at the start of a silence period, or periodically, and it is used to characterize the power level of the background noise during silence period on the encode side of the voice path. The SID frame is then passed to the decode side through the packet encoding medium (AAL2 or RTP). The decode side then generates comfort noise at an equivalent power level dictated by the SID frame values. Valid values for the variable are: * silSupOff - silence suppression is off. * silSupOnSidOn - send an SID frame at a specified constant interval (e.g. 100ms). Following values are not supported: * silSupOnSidOff - discontinue transmission during silence periods and no SID frame is sent. * silSupOnSidConst - send an initial SID frame and then discontinue transmission. Silence suppression is not supported on MALC. The default value is silSupOff.