[asterisk-users] network design philosophy and practice

[Paul Hales]

Separate cabling is also useful if the phone system is being deployed by
a separate company - it avoids the 'your computer network is generating
rubbish traffic' arguments. (been there before, sadly)

PaulH


Andrew Latham wrote:
> Alex
>
> I see a fair bit of separate physical networks because of different
> management of phones vs IT.  In the old businesses Facilities handles
> the communications and IT is playing catchup all the time....
>
> So in these businesses where the IT side is swapping switches on a
> weekly basis it is safer to have a separate physical network.
>
>
> Andrew
>
>
> On Wed, Oct 29, 2008 at 11:30 AM, Alex Balashov
> <abalashov at evaristesys.com> wrote:
>   
>> I'm pretty sure they meant two logical networks.  At least, I hope they did.
>>
>> David Gibbons wrote:
>>
>>     
>>> Two separate networks? Did I miss something? I feel like I'm taking crazy pills! Two separate physical networks means twice the hassle, twice the maintenance, twice the cost, twice the headache. Not to mention the fact that the whole idea of VOIP is to simplify IT and focus on converging data and voice networks.
>>>
>>> This is what VLANs and QOS do best. I dare say it's what they were designed foe. I can't think of any reason that I would ever recommend two ports per desk to support telephony -- ever. It's ludicrous to think that two ports will be better than one if we're setting up our VLANs and QOS properly. A phone takes very, very little bandwidth away from the desktop and a decent one will support tagging its frames for the alternate voice VLAN.
>>>
>>> --snip--
>>> In almost all cases it is much better to have two seperate networks.
>>> This may be impractical in some smaller installs, but in any office
>>> setting we always do this. The only reason I can think of not to is to
>>> eliminate the cost of the second cable.
>>> --snip--
>>>
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>> --
>> Alex Balashov
>> Evariste Systems
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