The actual speeds for ADSL services will vary due to many factors including distance from the local telephone exchange, the quality of the customer's copper phone line, cabling and equipment.
Devices connected by Wi-Fi may experience slower speeds than those connected by Ethernet cable.
For customers having issues with their service, we recommend to check if there's an outage affecting the area.
In your case, we have identified a line fault affecting the line sync speed, thus we have escalated this to our Engineering Team.
We may need to send a Telstra technician to fix the issue and further updates will be provided via SMS or phone call.