Australian Mobile Telephone Networks

Network Type	Standard	Carriers
GSM-900* GSM-1800*	2G	Optus	All the standards belonging to this generation are commercial centric and digital in form.
		Telstra
		Virgin
		Vodafone
CDMA-800	3G
		Telstra	The systems in this standard are basically a linear enhancement of 2G systems. They are based on two parallel backbone infrastructures, one consisting of circuit switched nodes, and one of packet oriented nodes.
UMTS	3G	3
		Optus
		Telstra
		Virgin
		Vodafone
HSDPA	3G	3
		Telstra
		Vodafone

* All GSM-900 carriers have  acquired spectrum in the 1800MHz  band and selectively blend GSM-      1800 in high traffic cells to supplement their existing GSM-900 coverage.