[asterisk-users] Unit of measurement dahdi_monitor

[Gustavo Santos]

**Thanks a lot, this was been very helpful

2010/11/26 Moises Silva <moises.silva at gmail.com>

>
> On Thu, Nov 25, 2010 at 11:54 AM, Gustavo Santos <gustavo at voip.ufrj.br>wrote:
>
>> I am studying about echo cancellation in asterisk and I want to use the
>> numeric information from dahdi_monitor verbose for my research.
>> Unfortunately, I couldn't find anything about the unit of measurement used
>> in this tool. Which unit is used to measure the signal level?
>>
>>
> dahdi_monitor uses the sample values in L16 format.
>
> They are in orders of magnitud of G.711. See tables 5 and 6 of the G.711
> spec. In the end, the reference value is the dBm (google that).
>
> Moises Silva
> Senior Software Engineer
> Sangoma Technologies Inc. | 100 Renfrew Drive, Suite 100, Markham ON L3R
> 9R6 Canada
> t. 1 905 474 1990 x128 | e. moy at sangoma.com
>
>
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