[Asterisk-Users] [OT] Old Building Needs a New Telephone System

[Bob Knight]

Michael Welter wrote:
> We have a 100 year old building here in Colorado that needs a new 
> telephone system. The building (five floors) is steel frame with lath 
> and plaster walls. There is no crawl space above the ceilings or under 
> the floors.  The building is "historic", and nothing can be done to the 
> exterior.
> 
> The current system uses existing Cat3 (two pair) to get to the digital 
> telephone set in each office.  Some offices have an additional pair 
> which is used for fax (and DSL).  I belive this fax line is a POTS line 
> from the telco.
> 
> The owners would like to replace the existing telephone system, but they 
> are adamant that the exsiting wiring be reused.  They would like to 
> provide a LAN connection to each office for both data and voice.  (They 
> would also like to install cable TV in each office, but cable install 
> costs would be $80,000+.)
> 
> The owners are concerned about frequent power failures and keeping the 
> telephones operational.  Whatever equipemnt and telephone sets we put in 
> the offices will have to be powered from a central UPS (PoE).
> 
> So how can I do this?  Can I use RS485 adapters to get ethernet to each 
> office via the two pair?  What kind of data rate can I get with RS485, 
> and would it be half- or full-duplex?  Would wireless work in a steel 
> building? Is there some other technology that can be used?
> 
> Ideas, anyone?

It is real easy. EoV (ethernet over vdsl).
I have done this and it works great.
For every 24 ports I used a 1u EoV, 1u splitter, 1u fxs gateway.
The little termination modems have ethernet and fxs.
Just add an * box, done.


-- 
Bob Knight
[-w] the work option
bk at minusw.com
925-449-9163