On Sat, Oct 30, 2010 at 11:58 AM, David Knell <[email protected]> wrote: > On Sat, 2010-10-30 at 06:13 -0400, Zeeshan Zakaria wrote: >> Doesn't matter how good VoIP is, there is no comparison with a real >> physical line. For absolutely 0 tolerance, guaranteed voice quality >> and 99.999% uptime, a physical T1 is the only solution. > > A physical T1 won't give you 99.999% uptime (that's five minutes of > downtime every year), and a semi-decent VoIP solution can give > guaranteed quality: we used to offer SDSL lines direct into our > platform, run G.711 over them and the quality was indistinguishable from > calls running over a PRI.
Sorry but I disagree, I do get for most of my PRI customers less than 5 minutes of downtime a year over a 5 year span. While my VoIP customers get around 20 hours downtime a year. I do consider crap quality downtime, and crap voice quality happens around 10 minutes a week with EVERY provider I have tried if the customer uses Internet. With a direct connection its way less but not eliminated. BTW, I don't count a downed utility pole that took out cable, phone, fiber, electric and everything else to a building - due to a MVA or storm - as downtime, as it effects every type of connection. > > --Dave > >> However as it is becoming an increasing trend in North American >> market, including many major and big (careless) corporations, to >> switch to cheap and crap voice quality and let the callers suffer, so >> if the customer doesn't care about quality, reliability and stability, >> SIP only solution should just be perfectly fine. Poor ordinary public >> is after all made to get used to it anyways. >> >> >> Zeeshan A Zakaria >> >> -- >> www.ilovetovoip.com >> www.pbxforall.com (beta) >> >> > On 2010-10-30 4:50 AM, "David Knell" <[email protected]> wrote: >> > >> > Hi Brian, >> > >> > >> > >> > > Gotta client that is moving to a VoIP PBX. Will need 10 concurrent >> > > calls with ability to grow ... >> > >> > Option (a) gives you diversity - ask yourself just how bad it'd be >> > if >> > their phone system went down because their DSL line wasn't working, >> > and >> > then balance this against the extra cost of the PRI. >> > >> > --Dave >> > >> > >> > > -- >> > >> > >> > > >> > _____________________________________________________________________ >> > > -- Bandwidth and Colocatio... >> > >> > David Knell, Director, 3C Limited >> > T: +44 20 3298 2000 >> > E: [email protected] >> > W: http://www.3c.co.uk >> > >> > >> > -- >> > >> > >> > _____________________________________________________________________ >> > -- Bandwidth and Colocation Pr... >> > >> >> -- >> _____________________________________________________________________ >> -- Bandwidth and Colocation Provided by http://www.api-digital.com -- >> >> asterisk-biz mailing list >> To UNSUBSCRIBE or update options visit: >> http://lists.digium.com/mailman/listinfo/asterisk-biz > > -- > David Knell, Director, 3C Limited > T: +44 20 3298 2000 > E: [email protected] > W: http://www.3c.co.uk > > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-biz mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-biz > -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-biz mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-biz
