[asterisk-dev] [Code Review] dsp.c User configuration of DTMF_NORMAL_TWIST and DTMF_REVERSE_TWIST values

[Alec Davis]

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This is ready to go.

Changing other unrelated code to use new Config API detracts from the intended purpose of this patch.



- Alec


On Oct. 2, 2012, 5:10 a.m., Alec Davis wrote:
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> (Updated Oct. 2, 2012, 5:10 a.m.)
> 
> 
> Review request for Asterisk Developers and Matt Jordan.
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> 
> Summary
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> Various countries have different specifications for the maximum power level differences between the DTMF low group and high group of frequencies.
> 
> Power level difference between frequencies for different Administrations/RPOAs
>  NTT        = Max. 5 dB
>  AT&T       = 4dB(reverse) to 8dB(normal)
>  Danish     = Max. 6 dB
>  Australian = Max. 10 dB
>  Brazilian  = Max. 9 dB
>  ETSI       = Max. 6dB from ETSI ES 201 235-3 V1.3.1 (2006-03)
> 
> Now allow 4 variables to be individually configured, in dsp.conf, with reasonable min/max of 2dB to 20dB.
> 
> 
> This addresses bug ASTERISK-20442.
>     https://issues.asterisk.org/jira/browse/ASTERISK-20442
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> 
> Diffs
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>   trunk/CHANGES 374206 
>   trunk/configs/dsp.conf.sample 374206 
>   trunk/main/dsp.c 374206 
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> Diff: https://reviewboard.asterisk.org/r/2141/diff
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> 
> Testing
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> compiled with/without RADIO_RELAX
> reloaded dsp with bogus values, and defaults are confirmed as loaded.
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> made some calls with FXS connected phone.
> Simple check for talkoff, none heard. 
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> 
> Thanks,
> 
> Alec
> 
>

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