We created this low cost butt set for people who occasionally need to deal with dial tone but don’t require all or the bells and whistles of the expensive ones. The BSX200 gives you dial tone, redial. Caller 10 and three ways to connect to the line: A RJ11 connector. High quality alligator clops and a type 66 adapter. This phone line test handles the most critical Butt Set requirements in a compact kit.