[Asterisk-Users] IAX2 Softphone Quality & Network Cards

[Douglas Logan]

I haven't had similiar experience, but in several threads about sound
quality people have talked about Network cards being the culprit. In
particular, a few people have commented all sorts of problems on
onboard NIC's, since they tend to be of lesser quality than
stand-alone NICS.

On 8/26/05, Adam Robins <arobins at pharmacentra.com> wrote:
> We are in the process of an Asterisk call center deployment using IAX2
> G711 ulaw softphones.   Outbound sound quality is terrible.
> 
> This week we rebuilt the entire LAN with Cisco 2950-EI switches and have
> employed QoS on the switches and router.  Still sounds terrible.
> 
> What we are now finding is that the network card in the PC may be the
> key to the problem.  A Dell Optiplex P4 2.4GHz 512MB machine with an
> onboard Intel NIC is bad, while an older Dell Dimension P3 864MHz 128MB
> machine with onboard 3COM sounds good.
> 
> Has anyone out there had a similar experience?
> 
> Thanks,
> Adam
> 
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