Media Converter For NO/NC Contacts?

while designing fiber optic layout for IP CCTV; came across customer need to connect push button(NO or NC) signal on different fiber strand to operate remote traffic barrier unit in the premise. Anyone knows the type of device needed at both end of fibre(multimode) to meet the requirement?

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**** *** ************ ***** ********** **** **** ********* **** *** ** ***** *******? ** course **** ** **** **** *** ***** ******** ** ****, so ** * ****** ** ********** ****** *** ******* ******* it ***** ** **** ** ******. ** **** ****** **** this ***** ****** ********** ********* *** **** *** ******, **** if *** ***** ** ******** ** **** *** ***** ***an ** ***** ****** or even a cheap camera, just for the NO/NC contacts on it. You could use the vms to initiate the signal, with various input devices, or rule base it depending. Or what Brian says sounds good too, though I'm wondering if the RLH uses the whole strand of capacity just for the contact control? Like an optical wire?

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