[Asterisk-Users] G729 Codec

[Steve Underwood]

Adam Hart wrote:

> Daniel Niasoff wrote:
>
>> Hi Everyone,
>>
>>  
>>
>> Is G729 more sensitive to packet loss or delays due to it’s higher 
>> compression. If I’ve generally got the bandwidth available, am I best 
>> sticking to ulaw.
>>
>
> G.729 has lost packet concealment, G.711 doesn't. G.711 will sound 
> better otherwise if you can afford the bandwidth.

Eh? G.729 has no particular features to allow more effective packet loss 
concealment. iLBC has, but at the cost of a substantially higher bit 
rate. In fact G.711 is a little ahead of G.729 in the regard, since 
packets are completely independant. The smoothing in G.729 means you 
need the previous packet to decode the current one properly.

Regards,
Steve