[Asterisk-Users] Still unable to use g729 codec... please HELP

[Rodolfo Grave]

Hello again and thanks for the support. The problem seemed to be that I 
needed to enable the g729 codec in the general section...

Thanks.

Aaron Johnson wrote:

> Rich Adamson wrote:
>
>>>> Ok. Thanks a lot anyway. BTW, do you know how many g729 licenses I 
>>>> need in this situation? Maybe 1 is not enough. Maybe I need 2: 1 
>>>> for decoding and one for encoding.
>>>>
>>>> RODOLFO
>>>>     
>>>
>>> As the documentation states, you need 1 license for each instance of 
>>> g729 in use.  That license is used to either encode, decode, or both.
>>>   
>>
>>
>> The problem that many of us have with the above statement is trying
>> to figure out exactly what "instance" happens to mean. Past postings
>> have suggested that an instance may be required when listening to
>> vm (under some circumstances), while gsm files are played to certain
>> calls, while a real call is in progress, etc, etc.
>>  
>>
> You are correct, keeping track of what requires a license can get 
> complicated.  Since they are not expensive, I imagine many people 
> simply purchase more licenses than are actually necessary.
>
> Phone using g729 listening to voicemail encoded in ULAW, GSM, anything 
> but g729 => 1 license used
> Phone using g729 listening to voicemail encoded in g729 => No licenses 
> used
>
> I suppose most people only need to be concerned with transcoding 
> to/from g729 if they are handling a lot of concurrent calls.  For 
> instance, we save all of our client's voicemail in g729 and ULAW 
> format.  By doing that, when our clients use their phones to listen to 
> messages, we don't have to do any transcoding.  Likewise, if they 
> check their messages from an outside line, by saving the messages in 
> ULAW format, we don't have to transcode there, either.
>
> As I said, if you are handling a low call volume, then go ahead and 
> order a few more licenses than you need.  If you are going to be 
> handling a larger call volume, I suggest investing some time to 
> understand all the ins and outs of transcoding and g729.
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