[Asterisk-Users] G729 question

[Brian West]

It doesn't matter ... A & B are compatible


On Thu, 18 Dec 2003, Clif Jones wrote:

> I am thinking about using the G729 codecs on my endpoint devices and
> purchasing some G729 licenses for Asterisk but I have several questions:
>
> 1. Which G729 codec is sold by Digium for Asterisk, G729, G729A, B...I?
> 2. If I have G729A on one end and G729B on the other, are they compatible?
>
> I have looked all over the place for question 2, but without buying the
> ITU docs
> I cannot seem to find this answer.  I know that G729A is low complexity
> which
> seems to be what Cisco 7960's use but I have some others that support G729B
> which has comfort noise and reduced transmission during silence.  If
> anyone knows
> how the different G729 codecs interoperate I would be eager to know.
> Thanks.
>
>
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