[Asterisk-Users] super high bandwidth codec

Tzafrir Cohen tzafrir at cohens.org.il
Tue Jul 26 23:54:23 MST 2005


On Tue, Jul 26, 2005 at 10:42:35PM -0700, Andrew C. Brown wrote:
> > 
> > A recent blog entry indicated that GIPS was issuing licenses for its
> > technology from a mere $50k for "unlimited licenses" with respect to an
> > agreement with Microsoft. I don't have a huge concern about bandwidth
> > limits. If I could get better quality than G.711 in the same bandwidhth
> > that would be great.
> > 
> > However, since I'm using IAX2 based DIDs and termination would it
> > really matter? That is, if the ITSPs are connection to the PSTN via TDM
> > interconnects wouldn't any calls be limited to G.711 quality anyway?
> 
> IAX2 is a protocol, not a codec, so has little impact on sampling
> quality. But the second assumption is correct. If you are going to PSTN
> at any point in the chain, you are back to 8kHz sample rate and that
> extra spectrum you put over iSAC or whatever is tossed out the window.

And also when you use MeetMe, right?

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Tzafrir Cohen         | tzafrir at jbr.cohens.org.il | VIM is
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