[asterisk-users] Teliax Quality of Service

Douglas Garstang DGarstang at interainc.com
Tue Aug 7 16:30:29 CDT 2007


> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-
> bounces at lists.digium.com] On Behalf Of Andres Paglayan
> Sent: Tuesday, August 07, 2007 1:06 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] Teliax Quality of Service
> 
> 
> On Aug 6, 2007, at 10:42 AM, Stephen Bosch wrote:
> 
> > Eric "ManxPower" Wieling wrote:
> >> Douglas Garstang wrote:
> >>> Let's assume for a moment that it's impossible. That does not
> >>> mean adding additional servers and additional networking
> >>> equipment does not add value, or is a worthless endeavour.
> >>
> >> I agree with that.  At least two people that I know run ITSPs.
Each
> >> time they have an outage (which is not very often) they DO learn
from
> >> the experience and work to avoid a future outage cause by the same
> >> issue.
> >>
> >> You would be surprised at how many little things can cause an
outage.
> >
> > My own experience is that increasing "failover redundancy", which
adds
> > correspondingly increasing complexity, also increases the odds of
> > an outage.
> >
> > It is very rare that failover redundancy works as intended during an
> > actual failover, no matter how many times you simulate it.
> >
> > I would rather have a simple network design where the cause of
> > failure,
> > when it happens, is obvious and quickly corrected. For example, I
> > would
> > rather have replacement parts on the shelf and be able to slap them
in
> > quickly than be running hot standbys and paying for the
> > electricity, and
> > then have the thing break anyway when there's a failure.
> >
> 
> I'll second that,
> specially for smaller installations,

You must have the kind of customers that don't mind having no phone
service for a few hours.





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