We do something like this, however we have two pairs of wires. One pair
is RS-485 for control running at 9600 baud. The other pair is baseband
audio which we control through relays on our intercoms. I can't imaging
trying to transmit digitally encoded audio over an RS485 network. There
are just too many issues with such a setup.
cheers,
darryl
On 2016-11-02 03:46 PM, Jerry Geis wrote:
Hi All,
The reason for the question was simply that the customer desired some
solution
called an "AOR" or Area of refuge - I think it was. Basically a call
button, microphone and speaker to hear back
with the kicker being "a long distance" the solution has to run.
RS485 is like 4000 feet.
There are solutions our there apparently that are not built on
asterisk - so I was just trying to find
a solution that potentially worked with asterisk.
Thanks!
Jerry
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