Telstra is testing on its LTE Cat 1 on its production network in partnership with Sequans Communications.
Cat 1 (Category 1) refers to the lower throughput speed (10 Mbps) defined in the existing LTE standard now being used for low cost and low power IoT and M2M applications.

“As the world’s first provider of an LTE Cat 1 chipset for IoT, we are excited to work with Telstra to validate that devices based on our Calliope Cat 1 LTE platform perform well in Telstra’s network,” said Craig Miller, Sequans VP of marketing. “Operators worldwide are taking advantage of the longevity and technology advantages that LTE brings to their IoT businesses. We look forward to helping Telstra’s IoT customers in this important space.”
http://www.sequans.com/products-solutions/streamlitelte/calliope-lte-platform/
http://exchange.telstra.com.au/2016/02/19/our-network-ready-to-support-the-internet-of-things/