Telephone numbers in Australia plan (including the "Trunk Access Code"), presented in domestic format. (Geographical region boundaries do not exactly follow State borders.) The current numbering plan would appear to be sufficient to cope with potential increase in demand for services for quite some time to come. The 06 and 09 area codes are completely unused. In addition, each current area code has large number "ranges" unallocated. When dialling from outside Australia, after dialling the appropriate International Access Code it is necessary to dial the Country Code for Australia (61) followed by the nine digit "National 'Significant' Number". (The + symbol is used to
Dialling (mathematics) Gresham College (London, UK), Samuel Foster (d. 1652), developed reflex dialling, which describes a device of his own invention: a sundial capable of reflecting a spot of light onto the ceiling of a room. The word "dial" derives from the Latin term "dialis" ("daily"), and comes from the fact that a sundial throws a shadow related to the time of day. It was also used to describe the gear in a medieval clock which turned once per day. Dialling (mathematics) In somewhat archaic applied mathematics, dialling is the mathematics required to create a sundial face to determine solar time based