[Asterisk-Users] inbound isdn call

Iain Stevenson iain at iainstevenson.com
Thu Feb 27 05:02:46 MST 2003


Sounds like the i4l dtmf problem.  Assuming you are using i4l, the kernel 
dtmf detection routines are poor and quite frequently misinterpret speech 
as dtmf tones.  You need to patch asterisk to handle dtmf and i4l not to 
detect dtmf (or silence).  There are a few posts on this list about fixing 
this issue.

  Iain


--On Thursday, February 27, 2003 12:06 pm +0100 Marian Danisek 
<majo at sunteq.sk> wrote:

> hello,
>
> when call is made via asterisk from isdn line to the snom sip phones and
> caller on isdn line is speaking loudly to the microfone, people on the
> sip phones didnt hear voice but tones, like dtmf.
> how can i firuge out this problem ? can echo cancel algorithm ?
>
> best regards
>
> Marian
>
>
> --
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