The BE-1 coax-to-twisted pair converter (balun) enables any E1 equipment with an unbalanced (coax) interface to operate over a twisted pair connection instead of over more expensive coax cables.
The BE-1 enables any E1 or ISDN equipment with a balanced twisted pair interface to use existing coaxial cables.
The BE-1 is a miniature, lightweight balun that operates without AC or DC power and provides insulation of up to 100V.