On May 6, 1986 air passengers wishing to place telephone calls while in flight are provided with a new public telephone service that operates from aircraft. The new public phones installed in jet airliners on domestic routes operate exclusively on telephone cards. Passengers 5,000 meters or more above Japan can now call anywhere in the country. The service is for outgoing calls only, and enables direct-dialed calls to any subscriber phone, mobile phone or marine phone, including collect calls.