[Asterisk-Users] Beeps and noises during calls

[Zoa]

Some more info:

TALKOFF is the wrong recognition of DTMF component in human voice as 
true DTMF signal. This is an unavoidable factor since human voice always 
contain valid DTMF combination. Fortunately, presence of these valid 
DTMF components are unsteady. Unlike real DTMF generated from a 
touch-tone keyboard, these 'human' DTMF cannot maintain on a constant 
combination. So they can be isolated by DELAY discrimination. If a 
decoded DTMF signal can stay on constantly for certain duration which 
exceed those normal period experienced in human voice, then it can be 
identified as a real DTMF command.

taken from:

http://www.qsl.net/ve3rgw/dtmfsql.html


Zoa wrote:

>
> Have a look at this :
>
> http://www.dslreports.com/forum/remark,9151528
>
> If anybody would have such a mitel or bellcore dtmf talkoff wav file, 
> i have a very big email box you can drop it in :p
>
> Zoa
>
>
> Sean Garland wrote:
>
>> I have a very annoying problem that we hear on our end, but the other
>> party doesn't hear.  There are random beeps and echo type noises that
>> occur.  They are present during voicemails, and present on my end during
>> calls.  Is anyone experiencing the same deal?  I have asked this a
>> number of ways on the list, and never get a response... 
>> Thank you.
>>
>>
>> Sean Garland
>> Mount Shasta, CA
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