Buy Cat3 I mean Cat3 spec cable (impedance and all), but only 1 pair going to
each room. The asterisk system replaced a big Meridian based system. that was
feeding analog "lines" to all the student rooms. We simply stripped the Meridian
system, connected the audiocodes to the existing patch panel and connected the
asterisk box to 2 PRIs.
I agree that a full IP is the way to go, but in this case that was just not an
option.
Would I redo it with audiocodes? No, I would go Mediatrix now especially that
they are a Canadian/Quebec based company.
Jim Van Meggelen wrote:
Andre Courchesne - Consultant wrote:
Problem is that there are no cat5 infrastructure in the residences and
they are spread over 5 buildings all wired with cat3 (1pair) only.
1 pair CAT3? Are you sure about that? You can't really call a cable CAT3
unless it supports 10-base-T Ethernet, which requires two pairs no
matter what. I'm pretty sure the CAT3 spec is pretty much always going
to be 4-pair, but for sure it has to be 2-pair or Ethernet ain't gonna
happen, in which case it's not really Cat3 anymore.
Are you sure that's not quad cable they've got there or something?
The reason it matters is that you can totally run IP phones over Cat 3.
We do it all the time (my partner Joel and I wrote an article about this
in the July 2008 issue of Cabling Business Magazine). It requires a bit
of planning, and a good pre-survey, but CAT3 works just as well for VoIP
as CAT5 if it's done correctly (it even meets the current PoE spec).
The students have their own phones (cheapo analog phones). The 9116
are used for admin staff sharing space in those buildings.
For the admin staff I would definitely look into IP phones. Saves all
that money buying and maintaining expensive FXO ports
Jim
John Lange wrote:
The Aastra 9112i is a SIP phone so you must mean another model? In any
case, I would think the Aastra SIP "terminals" (as they call them) would
be just as durable as the analog only models.
If you are doing this in a student residence with analog phones, why not
just require them to supply their own phones?
The Call-waiting-caller-ID features is quite nice so I'd encourage you
not to disable it. Try testing it with a consumer level phone that
supports caller id to confirm it's working.
I have not encountered a current model of consumer phone with caller id
that does not also support callerID on call waiting.
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