[RE-wrenches] Remote monitoring via landline

[William Miller]

Friends:



I am designing a remote off-grid system to run some traffic lights.  Due to
the critical nature of this traffic control function, remote monitoring is
desirable.  There is apparently a landline on site.  I don’t imagine the
S/N is very high.



Do any of you now a way to monitor and control a remote system using a
dial-up landline?



Thanks in advance.



William Miller



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