[asterisk-users] Intermittent DTMF Problems

[Brent Davidson]

Would TXgain really affect DTMF detection all that much on an incoming 
call?  I can see how RXgain might cause some problems if it was too high 
or too low, but I adjusted both of these settings according to the echo 
cancellation guide using the Type 102 Milliwatt test lines.  My rxgain 
is already -2.8 and if I drop my txgain below +4 callers complain that 
they can't hear the users on the Sip phones inside the offices.

Thanks,
Brent

Eric Wieling wrote:
> Lower the rxgain and txgain on your Zap channels.
>
> bilal ghayyad wrote:
>   
>> Hi Brent;
>>
>> I have been suffering from this problem since about 2
>> monthes and until now still did not resolved 100%.
>>
>> First of all, I need to tell u that mostly u have a
>> problem that the first digit is duplicated, for
>> example: if ur customer entered 108 then it will be
>> recognized 110 (the 1 duplicated, and then it takes
>> the 0, and it does not continue to take the 8 as it
>> completes the 3 digits ... this is just an example).
>>
>> Your problem is in the duplication for the digit and
>> specifically the first digit usually will be
>> duplicated.
>>
>> If u found a solution let me know.
>>
>> Regards
>> Bilal
>>
>>
>> ---------------
>>
>> I've recently installed Asterisk-based servers at
>> several of our branch
>>  
>> offices.  Each server has 2 X100P cards to handle 2
>> incoming voice 
>> lines.  I was having a lot of trouble with Echo until
>> I got OSLEC 
>> running on all of the servers, but now we have a new
>> problem.  Incoming
>>  
>> callers are not always able to dial extensions.  I
>> would say probably 
>> 95% of the calls go through correctly, but that other
>> 5% always get 
>> dumped to the operator queue.  I have relaxdtmf=yes in
>> my zapata.conf 
>> for both channels, but it doesn't always help.  One
>> particular customer
>>  
>> has trouble dialing an extension about 1 call in 5. 
>> I'm wondering if 
>> it's just because they call us more than any of our
>> other customers or 
>> if there is some peculiarity with their phone system. 
>> Anybody have any
>>  
>> ideas what to try next? 
>>
>> Thanks,
>> Brent Davidson
>>
>>
>>
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