[asterisk-biz] PRI vs SIP vs ???

[C F]

On Sat, Oct 30, 2010 at 11:58 AM, David Knell <dave at 3c.co.uk> 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" <dave at 3c.co.uk> 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: dave at 3c.co.uk
>> > W: http://www.3c.co.uk
>> >
>> >
>> > --
>> >
>> >
>> > _____________________________________________________________________
>> > -- Bandwidth and Colocation Pr...
>> >
>>
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> --
> David Knell, Director, 3C Limited
> T: +44 20 3298 2000
> E: dave at 3c.co.uk
> W: http://www.3c.co.uk
>
>
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> _____________________________________________________________________
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