The CDMA technology has served Australia well over the years, but it has now been overtaking by more advanced third generation mobile technology such as the Telstra Next G network. The Telstra Next G network carries about 7.5 times more data than the CDMA network at its peak.
At midnight tonight Telstra will progressively turn off the redundant CDMA mobile network. The decommissioning process will start in the eastern states, followed by other regions in accordance with their local time zones. Any calls that are in process at the time of the closure will be allowed to continue until 1am local time on Tuesday 29 April. Telstra will also ensure that any existing Emergency 000 calls initiated before midnight will be individually allowed to continue until completed.
Following the network closure any calls to a remaining CDMA service will received a "Number disconnected" announcement, while text messages will receive a "Message Not Sent" indication.