Calling code: +255[1] International call prefix: 000[5] Main lines: 161,100 lines in use, 133rd in the world (2011).[3] Mobile cellular: 27.2 million lines, 39th in the world (2012).[3] Telephone system: telecommunications services are marginal; fixed-line telephone network inadequate with less than 1 connection per 100 persons; system operating below capacity and being modernized for better service; Very Small Aperture Terminal (VSAT) system under construction; mobile-cellular service, aided by multiple providers, is increasing rapidly and in 2011 exceeded a subscriber base of 50 telephones per 100 persons; trunk service provided by open-wire, microwave radio relay, tropospheric scatter, and fiber-optic cable; some links being made digital (2010).[3] Communications cables: landing point for two fiber-optic cables (2010): SEACOM submarine and terrestrial high speed fibre-optic cable linking the countries of the east and west coasts of Africa to each other and on to Europe and India;[6] and the EASSy fiber-optic submarine cable system linking East Africa with Europe, and North America.[3] Satellite earth stations: 2 Intelsat (1 Indian Ocean, 1 Atlantic Ocean) (2010).[3]