A remote facsimile machine 61 calls a facsimile device 1 in S10 so that the facsimile machine 1 connects the telephone circuit in S32. The coating is formed from a colloidal particle dispersion. Over-pull sensors monitor cable tension and initiate valves in the control system to initiate the compressed air interruption and rerouting upon any sense of over-pull. The on or off states of the first transistors and the second transistors are controlled by the reference currents.