[olug] OT: Bandwidth Requirements for VOIP

[Justin Reiners]

We finally bit the bullet went with fiber but we did not go with Cox, ended
up going with Centrelink 100 megabits down/up with sip
On Dec 23, 2012 1:19 PM, "Craig Wolf" <wolfout101 at gmail.com> wrote:

> From Cox's mouth: "we can only do best effort on the Cable Modem side".  I
> have problems across my enterprise doing faxes because of Cox and their
> "best effort".  Voip has been good but that is because I have their Metro E
> pushed directly back to my corporate office and I QOS my equipment.  To
> adjust to this, there will be a fax server investigated next year...
> They are using 1498 for their MTU so we had to adjust all our routers to
> that as well...took testing to find that out, they would not tell us.
>
> Very frustrating.
>
> Craig Wolf
> (402)990-3010
>
>
> On Sun, Dec 23, 2012 at 12:43 PM, Justin Reiners <justin at hotlinesinc.com
> >wrote:
>
> > The only way we could switch to VoIP reliably with Cox (in their words)
> was
> > switch to optical internet. Then they would be able to do QoS on it.
> > On Dec 23, 2012 12:34 PM, "Dave Thacker" <dthacker at bluestrain.net>
> wrote:
> >
> > > On Sunday, December 23, 2012 10:45:43 AM Dan Linder wrote:
> > > > I'll second Lous comments.  Even at five calls times 60k is well
> below
> > > the
> > > > 1MB of the low end data rate plans.  If you dont have Internet for
> them
> > > > yet, look at the low end business class options from Cox.  Their SOHO
> > > > option I had the past couple years was only  $30/mo than regular home
> > > > internet, but the QoS was separate from the Cox home users so snow
> days
> > > > didn't affect performance.  Another plus is your a business so you
> get
> > > > priority in the repair queue.
> > > >
> > > > Dan
> > >
> > > The office is currently on a Cox Business Plan.  We're looking how to
> > > match up
> > > capacity with future use.
> > >
> > > DT
> > > >
> > > > On Dec 23, 2012 9:36 AM, "Lou Duchez" <lou at paprikash.com> wrote:
> > > > > When you say "VoIP", do you mean you'll be using Vonage, or
> Asterisk,
> > > or
> > > > > what?  Is there a particular goal you're trying to meet by
> switching
> > to
> > > > > VoIP?
> > > > >
> > > > > The minimum bandwith is pretty much a function of the compression
> --
> > a
> > > > > call can take 10k or 60k, depending.  Also, faxes don't tend to
> work
> > > that
> > > > > well over VoIP, and certainly not with G.729 compression (the low
> > > > > bandwidth kind).
> > > > >
> > > > > And if you're using DSL or cable modem for both VoIP and Internet
> > > > > traffic, you may experience dips in quality if the VoIP is
> competing
> > > > > with downloads.
> > > > >
> > > > >  QoS can help, but it can really only help with the outbound part
> of
> > > the
> > > > >
> > > > > call; the prioritization of traffic coming down the pipe is decided
> > by
> > > > > your ISP.
> > > > >
> > > > > I find that VoIP can be as reliable as regular phone service, but
> to
> > > > > really do it right you need a business-grade VoIP product provided
> > by a
> > > > > carrier like XO, and it will likely involve buying a phone system.
> > >  Cheap
> > > > > VoIP over a DSL can work pretty well, for the most part; but if
> your
> > > > > business is utterly reliant on your phones, hiccups and problems
> > caused
> > > > > by cheap VoIP may hurt your business more than you save.
> > > > >
> > > > >  I'm looking at moving my wife's office over to VOIP this year.
> There
> > > are
> > > > >
> > > > >> currently 2 lines supporting 4 users.   Fax traffic is less than
> 20
> > > > >> pages a
> > > > >> week in/out.   Talk time can be sometimes be quite lengthy when
> > > dealing
> > > > >> with
> > > > >> the IRS or clients.   What would you recommend as a good bandwidth
> > > level
> > > > >> to
> > > > >> support the office?  Are the other questions I should be asking?
> > > > >>
> > > > >> Thanks!
> > > > >> Dave Thacker
> > > > >>
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