I have an Ameritec 830e ISDN Tester (PRI/BRI).
It is E1/Euro-ISDN only. Power transformer takes 100-240v 50/60hz so it will work worldwide. Uses a standard PC style mains power cord.
Input is 2 coax but there is a Black Box G.703 Balum included which will convert to RJ45/48.
Includes manual and carrying case and is in excellent to mint condition.
Drop me a line if you're interested. I can send you pictures.