How phone numbers are formatted in Australia

Tel_Number_Formatting.md

Interstate call

eg. 02 6555 1234

0         - trunk prefix
2         - Area code for New South Wales
6555      - STD code for a specific telephone exchange
1234      - Telephone Exchange specific extension.

For a mobile phone this becomes

eg. 0412 345 678

0         - trunk prefix
4         - Area code for a mobile telephone
1234 5678 - Mobile telephone number

International trunk

eg. +61 (0) 412 345 678

+         - Short hand for the country trunk number
61        - Country code for Australia
4         - Area code for a mobile telephone (drop the 0)
1234 5678 - Mobile telephone number