[asterisk-users] RS485 Audio device

Eric Wieling ewieling at nyigc.com
Wed Nov 2 15:21:07 CDT 2016

If cable can be pulled , you have a couple of options.

Long Reach Ethernet from Cisco is rated for 5,000 feet. Multi-mode fiber 
with fiber/ethernet media converters on each end would work and 
electrically isolate the two ends of the cable. Both are way overkill 
from a capacity standpoint, but sometimes there's nothing wrong with 
overkill. Put an ATA on the far side.

On 11/02/2016 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

if at first you don't succeed, skydiving isn't for you

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