You can piece together that G.729, G.729a & G.729b will play together and the other annexes will not due to
bandwidth differences.
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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