[App_rpt-users] DTMF voice falsing

[Lu Vencl]

This is an interesting problem. I never hear this on any of my nodes.
Could it be that there is too much audio driving the URI? Not sure, but does
the URI RX level drive the DTMF detection? If so, you might be too hot..
Might be worth trying to adjust that down as a test to see what happens?

-----Original Message-----
From: app_rpt-users-bounces at ohnosec.org
[mailto:app_rpt-users-bounces at ohnosec.org] On Behalf Of Tim Sawyer
Sent: Sunday, December 18, 2011 11:25 PM
To: Ken
Cc: App_rpt-users at ohnosec.org
Subject: Re: [App_rpt-users] DTMF voice falsing

I tried removing RADIO_RELAX but touch tone decoding was way too slow for my
taste. Jim mentioned that the parameters could be adjusted to perhaps find a
happy medium between radio_relax and phone mode. The parameters are in
/usr/src/astsrc/asterisk/main/dsp.c under the RADIO_RELAX compiler
directive. Not being a C programmer and knowing even less about the DSP
routines, I couldn't make much sense of the values. But maybe others could
check it out and explain the parameters to the rest of us. :-)
--
Tim
:wq

On Dec 18, 2011, at 8:05 PM, Ken wrote:

> In my case, the DTMF commands work fine with this setting. 
> 
> The  only time I have trouble is when there is some multipath distortion
...
> driving to the next traffic light is usually enough to fix that  ;-)
> 
> Ken
> 
>> -----Original Message-----
>> From: Tim Sawyer [mailto:tim.sawyer at me.com]
>> Sent: Sunday, December 18, 2011 11:02 PM
>> To: Chris (KB2FAF)
>> Cc: Ken; App_rpt-users at ohnosec.org
>> Subject: Re: [App_rpt-users] DTMF voice falsing
>> 
>> But can you still reliably function the system?
>> --
>> Tim
>> :wq
>> 
>> On Dec 18, 2011, at 7:12 PM, Chris(KB2FAF) wrote:
>> 
>>> Ken,
>>> 
>>> Your suggestion made a huge difference!
>>> 
>>> Thank you.
>>> 
>>> Chris - KB2FAF
>>> 
>>> 
>>> On 12/18/2011 02:23 PM, Ken wrote:
>>>> My experience always has been that the standard install is WAY too
>>>> sensitive to DTMF false decodes.
>>>> There may be an easier way to do this (I hope to find), but, one way
>>>> is to remove the RADIO_RELAX compiler flag in
>>>> /usr/src/astsrc/asterisk/menuselect.makeopts
>>>> it should read only:
>>>> MENUSELECT_CFLAGS=LOADABLE_MODULES
>>>> 
>>>> Then cd astsrc
>>>> And
>>>> ./configure
>>>> Make
>>>> Make install
>>>> 
>>>> There is a menu for changing compiler flags in recent releases - you
>>>> have to make the menuselect program when you do the install (I
>> think)
>>>> 
>>>> 73
>>>> 
>>>> Ken
>>>> 
>>>>> -----Original Message-----
>>>>> From: app_rpt-users-bounces at ohnosec.org [mailto:app_rpt-users-
>>>>> bounces at ohnosec.org] On Behalf Of Chris(KB2FAF)
>>>>> Sent: Sunday, December 18, 2011 2:06 PM
>>>>> To: App_rpt-users at ohnosec.org
>>>>> Subject: [App_rpt-users] DTMF voice falsing
>>>>> 
>>>>> Hi,
>>>>> 
>>>>> I have been noticing an interesting problem.  Audio drops on my
>>>>> repeater and link sporadically for maybe 500ms now and then as a
>>>>> conversation is taking place.  If I watch debugging data from CLI
>> it
>>>>> usually coincides with DTMF being sensed in certain voices.  Is
>>>>> there a way to increase the time it takes for the system to
>>>>> recognize DTMF?  Or is there something else going on.
>>>>> 
>>>>> Thanks for any pointers...
>>>>> 
>>>>> Chris
>>>>> 
>>>>> KB2FAF
>>>>> 
>>>>> 
>>>>> _______________________________________________
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> 
> 

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