Another possibility, if you're just looking to do telephony, would be
to pick up a stack of 2nd hand TDM phones (i.e. cheap) and run TDM
across the cat3 to a Citel adapter box in the closet, that then does
SIP to a PBX.
But my gut says that as long as you're 1 device per port, 10M ethernet
would be fine for VoIP.
--
Christopher Manly
Network Software Engineer
Cornell Information Technologies
NCS Network Engineering
c...@cornell.edu
607-255-3344
On Feb 4, 2010, at 11:55 AM, Tom Limoncelli wrote:
I don't have direct experience but here's my thoughts...
1. 10M ethernet is half-duplex. That might be a problem, but your
VOIP vendor can tell you for sure. If you are full-duplex between the
switches, and each location gets a dedicated switched port (no hubs)
I'm guessing things would be fine, but you should do some tests first.
2. Be careful to configure your switches to only autodetect to 10m.
You don't want a switch to be so "smart" that it thinks it can get
100M just because a few signals got through.
There's no reason it won't work. I mean, the backplane of a PBX I
owned once was only 1M or so.
Tom
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