[Asterisk-Dev] Voicemail sound level threads?

[Gregory Junker]

Not sure. I am up to my neck in bids right now and events this weekend 
and won't be able to look further until next week. I have a T100P to 
test Zap channels with, but from what I have seen so far, it has to be a 
  loss in transcoding (the VM path from a SIP phone to VM file is G711u 
--> s-linear --> GSM file/WAV file/wav file). In other words, there is a 
software issue that needs addressed. * uses the "canonical" GSM codec, 
and pretty much cut-n-pasted the CMU u-law/slinear conversion code, both 
of which *ought* to be well tested (and I have verified that the u-law 
conversion produces the identical result as the CMU implementation), so 
it will take a bit more nosing around to find out what the issue is. I 
still am not convinced that the GSM encoding produces the correct 
results, but I have the GSM test files from ETSI so it should be 
straightforward to find out.

Greg

Rich Adamson wrote:
>>>You are correct. I am not suggesting what format_wav.c is appropriate.
>>>In fact I am suggesting it as what is wrong. I suggest that this may be
>>>a little bit to blame why you aren't hearing more complaints. 
>>
>>Ah, gotcha. This is the hack you were talking about in the other list.
>>
> 
> 
> So, where did this thread end up?
> 
> Is this truly related to bug 2023 when voicemail format=gsm?
> 
> Rich
> 
> 
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