A connector or termination assembly for a mini-coaxial cable in different embodiments is made up of an extension tip which is preassembled in a connector body to receive the inner conductor pin on the cable, a first inner sleeve which fits over an exposed end of the dielectric layer, a second outer sleeve which surrounds a compression ring, and a crimping ring is mounted on the outside of the outer sleeve to force the sleeves to be radially contracted into crimping engagement with the cable so as to avoid creating impedance which will downgrade the signal passing through the cable into the connector. In alternate embodiments, variations of the connector body may be employed for different lengths and forms of connectors with a compression tool or crimping ring assembly in further combination with color bands to signify the size of cable and intended application.