[Asterisk-Users] one way choppy sound problem !

[Steven Critchfield]

On Mon, 2004-01-12 at 04:00, Dawid Mielnik wrote:
> Hi !
> 
> To TeleSIP, Steve Dolloff, Nicolas Gudino, Steven Critchfield and all of you
> who have had problems with one way periodic choppy sound problem in the
> direction SIP ---> PSTN.
> 
> The source of the problem, in my case was a worm on my windows os. The
> worm(s) used DoS against microsoft's ip addresses. It sent a large number of
> SYN requests every second which caused caused my out bandwidth to jump to
> about 40 Kbps and probably queued/delayed the RTP stream and in turn causing
> the chops in sound heard on the PSTN side.
> 
> Hope this helps for the rest of you with similar problems. The worms I have
> found were:
> 
> worm.blaster.A - msblast.exe
> worm.blaster.E - mslaugh.exe
> worm.blaster.F - TFTP1516

Don't know how my name was associated with this, but I don't use Sip,
and I don't have any windows machines to be infected. 
-- 
Steven Critchfield <critch at basesys.com>