Regulation The Postmaster-General's Department regulated telecommunications and operated telephone and related communications within Australia over the copper telephony network from federation up to 22 December 1975, replaced by the Postal and Telecommunications Department.
Regulation The Postmaster-General's Department regulated telecommunications and operated telephone and related communications within Australia over the .copper telephony network from federat:ion up to 22 December 1975, replaced by the Postal and Telecommunications Department.