[Asterisk-Users] Alternatives to Digium 729

[Rich Adamson]

> Per my conversation below with digium, are there any legal alternatives 
> to digium's G729? It is out of date, and doesn't support VAD nor silence 
> detection.
> 
> Digium has stated that they have no plans to update it anytime soon.
> 
> VAD/Silence is a big deal with major carriers and we are having to fight 
> a battle to get them to make special arrangements to turn off 
> VAD/Silence in their equipment. Most won't.
> 
> RFC3389 states that G729 Annex B supports VAD/DTX/CNG but Digium's 729 
> is based off annex A; and again, they don't have plans to update it.
> 
> Is there anyone out there with news on VAD/Silence support in Asterisk?

The internal architecture of asterisk right now is based on sending a
packet for each packet received (timing), therefore asterisk is not
currently compatible with VAD/Silence support regardless of which
codec you use. (eg, its not a codec issue at all.)

There was some discussion in the past about changing that architecture,
but my understanding is that it's not a trevial task at all. Might
search the archives for more accurate detail.