I'm in a similar situation. However, most of my buildings were re-wired
around 1994 to provide Cat5 or 5E to the desktop for data, and 2-pair
Cat3 for voice, all in a star topology. I can move my voice
infrastructure to an IP-based one running 10Mbps, utilize existing
wiring infrastructure, with the only cost outlay being low cost PoE
managed switches (48 ports for about a grand), and it ends up a lot
cheaper than upgrading the data network to support the phones. ...and I
can still stay within standard.
Is this an option for you or are you still living with the remnants of
an old key system or something like that?
"The journey of a thousand miles begins with a broken fan belt and a flat tire."
On 2/8/2012 10:46 AM, Vieri wrote:
Let me answer that, Carlos. A big hospital.
These big infrastructures can be quite outdated and messy. Getting
someone to cable old parts of the buildings can be very expensive.
However, replacing just the backbone switches is something they can
afford. And they don't need PoE, really.
What kind of applications benefit from gigabit speed? Well, plenty,
such as MDs having to view a whole bunch of x-ray images of several
patients, as fast as possible. Believe me, doctors aren't patient and
Gbps makes a big difference.
So basically, that's your answer: these sites don't need PoE, just
Gbps and can't afford cabling a huge old building. Now, they don't
care for PoE on the hardphones either.
So in these cases, I think it's clearly justifiable to have a
low-budget Digium D40 or Grandstream GXP280 with a 2-NIC Gbps switch.
Not a big deal anyway, because they can always add a mini 5 or 8-port
gigiabit switch for around 20$ between the wall socket and the
hardphone+PC, but that just adds another appliance to the doctor's
office...
--- On *Wed, 2/8/12, Carlos Alvarez /<[email protected]>/* wrote:
From: Carlos Alvarez <[email protected]>
Subject: Re: [asterisk-users] SIP hardware phones
To: "Asterisk Users Mailing List - Non-Commercial Discussion"
<[email protected]>
Date: Wednesday, February 8, 2012, 9:26 AM
If the customer is so cheap that they won't properly build out the
network, why would they have gigabit switches to the desktop which
have a limited set of applications that actually benefit from it?
Then there's PoE, which is expensive to start and very expensive
with gigabit. So this mythical customer is too cheap to cable,
but will buy a gigabit switch of dubious value, will they buy a
PoE gigabit switch? If not, why not buy a value-priced PoE 100m
switch which has a clear benefit instead of a low-end GB switch of
dubious value?
I just don't see the fit, and I'm guessing the vendors don't
either. What is the exact network topology (brands/models) and
applications that justify GB to the desktop, don't justify
additional cabling, and how do you account for PoE in this
environment?
On Wed, Feb 8, 2012 at 7:13 AM, Vieri <[email protected]
</mc/[email protected]>> wrote:
--- On Wed, 2/8/12, Jason W. Parks <[email protected]
</mc/[email protected]>> wrote:
> From everything I've researched to
> date, my understanding is most
> locations have chosen to double their port density and
> continue to
> service the phone and computer on separate ports than to
> share a single
> line for both computer and phone. Reason primarily mentioned
> being
> troubleshooting concerns. If this is the case, the second
> port is not
> required, and become nothing but another gimmick to sell to
> you.
>
> Is this everyone else's experience as well?
Well, at some locations, for technical and mostly political
reasons, doubling port density so that the computer connects
to a separate port is too costly, way over what a 60$
hardphone can cost (eg. Grandstream GXP285). I'd be glad to
pay just "a tad more" for hundreds of "basic" hardphones, just
as long as they can do gigabit.
Vieri
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