> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:asterisk-users- > [EMAIL PROTECTED] 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: [EMAIL PROTECTED] [mailto:asterisk-users- > >> [EMAIL PROTECTED] 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. _______________________________________________ --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
