[asterisk-users] Teliax Quality of Service

[Douglas Garstang]

> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-
> bounces at lists.digium.com] On Behalf Of Anthony Francis
> Sent: Tuesday, August 07, 2007 7:29 AM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] Teliax Quality of Service
> 
> Douglas Garstang wrote:
> >> -----Original Message-----
> >> From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-
> >> bounces at lists.digium.com] On Behalf Of SIP
> >> Sent: Monday, August 06, 2007 8:56 AM
> >> To: Asterisk Users Mailing List - Non-Commercial Discussion
> >> Subject: Re: [asterisk-users] Teliax Quality of Service
> >>
> >> Steve Totaro wrote:
> >>
> >>> Anthony Francis wrote:
> >>>
> >>>
> >>>> Tim Panton wrote:
> >>>>
> >>>>
> >>>>
> >>>>> On 5 Aug 2007, at 06:54, Douglas Garstang wrote:
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>> I don't think creating a network without a single point of
> >>>>>>
> > failure
> >
> >>>>>> is unreasonable.
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>> It's impossible. I can't think of a single example where this
> >>>>> actually exists.
> >>>>>
> >>>>> Getting even close is hideously expensive.
> >>>>>
> >>>>> Tim, speaking for himself :-)
> >>>>>
> >>>>> _______________________________________________
> >>>>> --Bandwidth and Colocation Provided by
> >>>>>
> > http://www.api-digital.com--
> >
> >>>>> asterisk-users mailing list
> >>>>> To UNSUBSCRIBE or update options visit:
> >>>>>    http://lists.digium.com/mailman/listinfo/asterisk-users
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>> In fact, the only people who would say something like this are
> >>>>
> > folks
> >
> >> who
> >>
> >>>> have never PHYSICALLY implemented a network, they simply don't
> >>>> understand the limitations involved.
> >>>>
> >
> > I worked for a CLEC in Montana, not Silicon Valley, not Manhatten,
but
> > rather PODUNK, Montana. We had redundant multi-homed servers,
connected
> > to multiple switches, running OSPF. A failure in any component
(server,
> > network, cable) would cause a failover to a backup component in
about 6
> > seconds. We had multiple upstream providers. The servers where
divided
> > between multiple racks, split between different power plants. We did
> > just about everything we could to make the setup redundant.
> >
> > The CPE equipment at any single location might fail, and that wasn't
> > redundant, but at least if that failed, it would not affect any
other
> > customers. CPE equipment included POE enabled phones, a UPS, a POE
> > switch and power being delivered from our plant.
> >
> > Yes, all the equipment was located at the same physical location. In
> > hindsight, we could have multi-homed our collocations. Why can't
service
> > providers multi home their edge systems to accept incoming calls
from
> > two physical locations? If a service provider did this, they would
have
> > two completely independent facilities, potentially thousands of
miles
> > apart, connected to different upstream providers. I can't think of
> > anything short of nuclear war that would destroy their ability to
accept
> > calls. If they did least cost routing, it wouldn't even matter if
their
> > providers failed. China gets hit by a meteor and NO provider can
deliver
> > calls to China? Fine... at least you can still call everywhere else.
> >
> > Maybe it still had some holes, but jeez, at least we tried to
deliver
> > high quality service.
> >
> >
> >
> >
> >
> >
> >
> > _______________________________________________
> > --Bandwidth and Colocation Provided by http://www.api-digital.com--
> >
> > asterisk-users mailing list
> > To UNSUBSCRIBE or update options visit:
> >    http://lists.digium.com/mailman/listinfo/asterisk-users
> >
> There is no one here not doing best-effort redundancy, what the first
> gentleman had said was a network with NO single points of failure.
> Clearly that is a pipe dream. To the person with six second failover,
> that 6 seconds would have dropped calls and dialing out issues
resulting
> in complaints. You would then tell your customer that you got it
working
> immediately and often they don't care, they are still angry about the
> dropped call. MY point is, VOIP is good, great even, but anyone
> expecting a less than 20 year old tech to be more reliable than a tech
> that has been around for over a hundred (PSTN) needs to spend some
more
> time thinking about that.

So you've never gotten a dropped call or dead air on a PSTN call? Put it
in a little perspective.