[asterisk-users] LAN IAX2 trunk bad audio quality vs. LAN SIP trunk good audio quality

[Gareth Blades]

Vieri wrote:
> 
> --- On Fri, 5/14/10, Steve Edwards <asterisk.org at sedwards.com> wrote:
> 
>>> I'm supposing my system is using the DAHDI-driven
>> Digium cards on my 
>>> motherboard. I don't know how hardware timers work and
>> if Digium 
>>> hardware rely on the motherboard (my system clock is
>> going too fast and 
>>> my ntpd is constantly adjusting the clock by -2.6
>> seconds every 20 
>>> minutes). In any case, since I'm on a dedicated LAN I
>> guess I can safely 
>>> set trunk=no.
>> Maybe it's just me, but I'd be thinking if the mobo
>> manufacturer did such 
>> a crappy job on the clock, what else is wrong. I'd be
>> looking for a better 
>> mobo.
> 
> The manufacturer is ASUS.
> The mobo is M4A77TD PRO, latest BIOS update.
> 
> Supposedly manufacturers such as HP and Dell should be better but people "usually" have a good opinion on Asus.
> 
> Beats me.

Could be a linux distribution issue. I have a SLES 8 mail server which 
ran fine but when I ported it over to a vmware server the clock ran fast 
like you have reported on yours. The clock on the host machine was fine.
If the linux distro has misdetected something then it could have the 
same result.