I-adaptha yesixhumi se-MU indlela engaguquki enezikulufu ezingahlukaniswa zibe izingxenye ezimbili: Uhlobo lweziqephu eziningi kanye Nohlobo Lomhlangano, ezinokhiye osebenzayo nokhiye ongashintshi.Khona-ke i-Crimp inezinhlobo ezimbili: "I-Crimp eyodwa" kanye "ne-Crimp emibili";Ibhuthi inezinhlobo ezimbili zezinto: enye iyirabha, enye iBellcore, futhi ibhuthi inombala ohlukile ngokwesicelo sakho.