[Asterisk-Users] Sound quality tuning with VOIP/Grandstreams... echo, cut out, codecs, asterisk

[Brian Dingman]

PCMU is g711 ULAW and PCMA is G711 ALAW. ALAW is more common in
Europe. Not sure about VAD.


On Thu, 27 Jan 2005 18:44:09 -0700, Kim Lux <lux at diesel-research.com> wrote:
> 
> Thanks for the tips.
> 
> The Grandstream doesn't have a G711 or uLaw option for codecs.  It has
> PCMU, PCMA and iLBC. Are any of these related to G711 ?
> 
> Grandstreams have echo cancellation and it appears to be working after a
> few seconds of conversation.
> 
> What is VAD ?