FCC Commissioner Mignon L. Clyburn says that since then, “tens of thousands of consumers” have “written, emailed, and yes, phoned the commission, pleading for relief on interstate long distance rates from correctional facilities.” Although unfamiliar to most phone users, Global Tel*Link and Securus Technologies Inc. are the two companies responsible for the majority of prison phone calls. Steven Renderos, a national organizer for the Center for Media Justice says that the companies attribute their high rates to “the security features their technology has” including monitoring calls and blocking phone numbers.