Re[2]: G.72[39] codecs

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> Pavel G. Zhbanov wrote:
> 
> >Hello!
> >
> >Is there a differece between a stream coded with G.72[39] by gateway
> >and by terminal?
> >  
> >
> 
> No, but there are multiple variants of G.729 and G.723 that are considered
> to be different codecs from a H.245 signaling's point of view: 
> G729AnnexA, Annex AB,
> G.723, G.723.1, G.723.1 Annex A, 5.3 and 6.3kbps variants, ...

>From h.245 point of view there is only one g.723.1 (5.3 and 6.3kbps are MANDATORY) and g.723.1 annex C. There is no such capability as g.723
for g.729 there are four: g.729, g.729A, g.7291B, g.729AB + extensions.
Each codec may have different frame sizes and packetizations as well...
Regards

> 
> Also, different RTP framesizes/packetization periods can be used.
> 
> Likely your gateway and terminal implement different variants.
> 
> Markus
> 
> >I have a situation in which calls comming from gateway (Planet) are
> >accepted by (remote) Cisco gateway, but calls comming from terminal
> >(NetMeeting, OpenPhone) are somehow not accepted (I dont say rejected,
> >because they are not rejected, just not accepted).
> >
> >All calls go through gnugk in proxy mode. I need proxy mode because
> >Cisco accepts call only from one IP address.
> >
> >I'd appreciate any help... Thanks in advance. 
> >
> >  
> >
> 
> 
> 
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