[Asterisk-Dev] Channels, jitterbuffer and PLC?

[Steve Underwood]

Hi Steve,

Do you think there is merit in having a-law to a-law and u-law to u-law 
variants of the PLC code, so conversion is only needed when fake data 
needs to be cooked up? Conversion is pretty lightweight, so I'm not sure 
if there is much to gain. However, since the issue of needing to pass 
everything through a linear step has come up a few times, the question 
seems worth asking.

Regards,
Steve


Steve Kann wrote:

> The one problem you'll find for a full implementation is that 
> presently, PLC only takes place upon translation from someformat -> 
> slinear, and not the other way around, but if you only take slinear 
> in, then you could do the PLC yourself (also, that's not too hard).
>
> But, now that I read your query again, this isn't what you want at 
> all: If your side is TDM, you don't want a jitterbuffer there. You 
> want the jitterbuffer on the receive side of the VoIP channels. So, 
> assuming that RTP/chan_sip gets the jitterbuffer, and you're taking in 
> slinear, it should all be good for you with no knowledge of the 
> jitterbuffer or PLC going on.
>
> -SteveK