[Asterisk-Users] G729 License questions

[Mojo with Horan & Company, LLC]

you can confirm what the phones have chosen for a specific call (for SIP 
for example) like this:
[pbx at pbx ~]$ sudo asterisk -rx 'show channel SIP/118-84f8'
...
    NativeFormat: 4
     WriteFormat: 4
      ReadFormat: 4
...

Then, to find out what 4 means,
[pbx at pbx ~]$ sudo asterisk -rx 'show audio codecs'
Disclaimer: this command is for informational purposes only.
         It does not indicate anything about your configuration.
         INT    BINARY        HEX   TYPE    NAME   DESC
--------------------------------------------------------------------------------
           4 (1 <<  2)      (0x4)  audio    ulaw   (G.711 u-law)
         256 (1 <<  8)    (0x100)  audio    g729   (G.729A)


So you can see my phones are ulaw-ing, they would have 256 in those 
fields if they had settled on g729

Moj




Martin Joseph wrote:
> On Mar 22, 2006, at 8:25 PM, Nathan Alberti wrote:
> 
>> I hope this isn't considered cross posting, i sent the following email 
>> to Digium support but figured someone on the list may also have better 
>> insight into my questions.
>>
>>
>> I have purchased 2 g729 licenses from Digium for testing and have the 
>> following questions;
>>
>> ** My configuration is a single asterisk box configured with 2 g729 
>> licenses and 2 x Cisco 7960 Phones, I have confirmed the phones are 
>> re-inviting correctly and the media stream is flowing directly between 
>> the two handsets**
>>
>> I was under the impression a license was only required when asterisk 
>> had to take part in the conversation and process frames, I have 
>> noticed that when the phone re-invite asterisk still considers a 
>> license to be in use when its is no longer in the media path, is this 
>> correct ? Should correct behavior not be to release the license as it 
>> is no longer being used ?
>>
>> I have also read it is possible for Asterisk to allow g729 pass 
>> through, if both endpoints are g729 both with set to re-invite. Is 
>> this scenario possible when you have the commercial license ? it seems 
>> to me you get hit with using a license because they are there not 
>> because they are necessarily required.
>>
>>
> I think you're right, that you don't need a license at all to pass g729 
> directly or even through asterisk.  It's only when you are transcoding 
> that you need a license.
> 
> Make sure your phones are actually SELECTING the g729 codec within 
> asterisk.  Just because the phone is set to prefer it, means nothing.  
> Verify that your asterisk extensions give highest priority to g729.
> 
> HTH,
> Marty
> 
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-- 
Mojo <mojo at horanappraisals.com>
Office Manger, Horan & Company, LLC
(907) 747-6666 x112