Calling code: +505[1] International call prefix: 00[3] Main lines: 320,000 lines in use, 112th in the world (2012).[1] Mobile cellular: 5.3 million lines, 108th in the world (2012).[1] Telephone system: System being upgraded by foreign investment; nearly all installed telecommunications capacity now uses digital technology, owing to investments since privatization of the formerly state-owned telecommunications company; since privatization, access to fixed-line and mobile-cellular services has improved; fixed-line teledensity roughly 5 per 100 persons; mobile-cellular telephone subscribership has increased to roughly 85 per 100 persons (2011).[1] Satellite earth stations: 1 Intersputnik (Atlantic Ocean region) and 1 Intelsat (Atlantic Ocean) (2011).[1] Communications cables: Americas Region Caribbean Ring System (ARCOS-1) fiber optic submarine cable provides connectivity to South and Central America, parts of the Caribbean, and the US (2011).[1]