Asterisk - The Open Source Telephony Project
18.5.0
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[default] ; ; Length of sound (in milliseconds) before a period of silence is considered ; to be a change from talking to silence or a period of noise converts silence ; to talking. [default=256] ; ;silencethreshold=256 ; DTMF Reverse Twist and Normal Twist is the difference in power between the row and column energies. ; ; Normal Twist is where the row energy is greater than the column energy. ; Reverse Twist is where the column energy is greater. ; ; Power level difference between frequencies for different Administrations/RPOAs ; Power Gain equiv ; normal reverse dB's ; AT&T(default) 6.31 2.51 8dB(normal), 4dB(reverse) ; NTT 3.16 3.16 Max. 5dB ; Danish 3.98 3.98 Max. 6dB ; Australian 10.0 10.0 Max. 10dB ; Brazilian 7.94 7.94 Max. 9dB ; ETSI 3.98 3.98 Max. 6dB ;previous version compatible AT&T values ; RADIO_RELAX disabled, and relaxdtmf=no ; 6.30 2.50 7.99dB(normal), 3.98dB(reverse) ; RADIO_RELAX disabled, and relaxdtmf=yes ; 6.30 4.00 7.99dB(normal), 6.02dB(reverse) ; RADIO_RELAX enabled, and relaxdtmf=no ; 6.30 2.50 7.99dB(normal), 3.984dB(reverse) ; RADIO_RELAX enabled, and relaxdtmf=yes ; 6.30 6.50 7.99dB(normal), 8.13dB(reverse) ;If you don't know what these mean, don't change them. ;dtmf_normal_twist=6.31 ;dtmf_reverse_twist=2.51 ;relax_dtmf_normal_twist=6.31 ;relax_dtmf_reverse_twist=3.98 ;successive number hits/misses of 12.75ms before a digit/nodigit is considered valid ;dtmf_hits_to_begin=2 ;dtmf_misses_to_end=3