What is Australian railway telegraphic codes?

Australian railway telegraphic codes were devised to reduce the size of telegraphic messages, though some survived into the telephone era. They were used in telegrams between various parts of the railway system, such as offices, stations, locomotive depots and goods yards.

There is a distinction between the telegraphic codes, and telegraphic code addresses. Many businesses of all kinds identified their telegraphic address, as well as their telephone number, on their stationery. In some states, railway operations would have offices with abbreviated addresses.