Variable spandsp dtmf rx reverse twist

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spandsp_dtmf_rx_reverse_twist

Sets the reverse twist setting in the spandsp DTMF detector. Reverse twist is set to 4 dB by default. This value can be safely increased up to 6 or 7 without a significant increase in talk-off to allow DTMFs that exceed this threshold to be detected. Set this variable prior to executing spandsp_start_dtmf.

Usage: 

<action application="set" data="spandsp_dtmf_rx_reverse_twist=6"/>
<action application="spandsp_start_dtmf" />


See also:

Implemented By:

Module Name Source File Last Updated
mod_spandsp mod_spandsp_dsp.c
Retrieved from "http://wiki.freeswitch.org/wiki/Variable_spandsp_dtmf_rx_reverse_twist"
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