R interface

{{more citations needed|date=May 2021}}

'''R interface''' or '''R reference point''' defines the point between a non-[[Integrated Services Digital Network|ISDN]] device and a terminal adapter (TA) which provides translation to and from such a device.

==See also== * [[S interface]] * [[T interface]] * [[U interface]]

==References== * {{FS1037C}}

[[Category:ITU-T recommendations]] [[Category:Integrated Services Digital Network]]

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