[Asterisk-Users] G729 codec

[Zoa]

Thats incorrect,

a and b are both the same, 8kbps.
a and b are just another way of calculating it, the result is the same
and a and b are compatible.


todd wrote:

>
> ----- Original Message ----- From: "todd" <tkgun-zaurus at comcast.net>
> To: "Asterisk Users Mailing List - Non-Commercial Discussion"
> <asterisk-users at lists.digium.com>
> Sent: Tuesday, May 24, 2005 12:34 PM
> Subject: Re: [Asterisk-Users] G729 codec
>
>
>> Andrew
>> Thanks for the reply-
>> Forgive my ignorance in this area but from what I have been told by
>> the client was that G.729 b used less over all bandwidth on average )
>> then G.729 A.
>> Correct me if I am wrong but the way it was laid out to me was G.729
>> B = (5.? kbps-8 kbps) G.729 A= (8 kbps -13kbps) , these of course
>> stats form Avaya devices, maybe for whatever reason Asterisk capable
>> of keeping it at 8?
>> This is way out of my area, I would love to be wrong and be able to
>> use A if it can perform they way they want.
>> The reason it is an issue they serve international circuits and every
>> bit counts and adds up with the volume they do.
>> TKG
>>
>>
>> ----- Original Message ----- From: "Andrew Kohlsmith"
>> <akohlsmith-asterisk at benshaw.com>
>> To: <asterisk-users at lists.digium.com>
>> Sent: Tuesday, May 24, 2005 6:55 AM
>> Subject: Re: [Asterisk-Users] G729 codec
>>
>>
>>> On May 22, 2005 04:46 pm, todd wrote:
>>>
>>>> Thanks for the info: do you know if  the g729 codec for Asterisk is
>>>> limited
>>>> to only the G.729A version. Is there G.729 B available for Asterisk?
>>>
>>>
>>> Does it matter?
>>>
>>> g729 has fixed-point and floating-point implementations.  The data
>>> coming out
>>> the back end is the same.  Either a is floating-point and b is
>>> fixed-point or
>>> the other way 'round (I can never remember).
>>>
>>> It should not make one whit of difference which one you use to
>>> generate the
>>> g729 stream.  Do you have a specific reason to need one over the other?
>>>
>>> -A.
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>>
>>
>
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