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string Intended for 1-leg calls, such as those terminating in an IVR menu or voice mail.

When greater than 0, this variable tells FreeSWITCH to transmit comfort noise when idle. The value of this variable is set to the divisor of the silence generating function. 400 or 1400 are common values set, but you may experiment with other choices to pick one that sounds best.

When true, FreeSWITCH will pick a default comfort noise value.

When -1, FreeSWITCH will transmit silence without comfort noise.


Code Block
<action application="set" data="send_silence_when_idle=400"/>