Telstra Corporation Limited (ACN 051 775 556)

The case before the court involved Telstra Corporation Limited, a telecommunications company in Australia, and the issue of the reasonableness of a monthly charge of $9.00 for access to its line-sharing service (LSS), as stipulated in its access undertaking. The Australian Competition and Consumer Commission (ACCC) challenged the reasonableness of this charge, arguing that Telstra’s method of determining its LSS-specific costs was flawed. The court had to decide whether Telstra’s approach to cost allocation and its method of levelising and allocating its LSS-specific costs were reasonable, in accordance with sections 152AH and 152AB of the Telecommunications Act 1997. The case also examined whether the $9.00 monthly charge was reasonable and aligned with the statutory criteria.

The court found that Telstra’s method of determining its LSS-specific costs was not reasonable, particularly in how it levelised and allocated its costs. The court held that Telstra's approach was limited to LSS active lines and LSS lines forecast to be active over the relevant levelisation period, which did not align with the statutory requirements. The court emphasised that the task was to determine if the $9.00 monthly charge was reasonable, which involved assessing whether each step in the derivation of Telstra’s unit costs was reasonable. The court noted that Telstra's method of levelisation and the allocation of its LSS-specific costs were not reasonable, and that the court should not solely focus on one step in the derivation of the unit cost estimate but consider the combined effects of all steps. The court concluded that the $9.00 monthly charge was not reasonable because it did not account for the reasonable cost structure as required by law.

In summary, the court held that Telstra’s approach to cost allocation and the method used to determine its LSS-specific costs were not reasonable. Consequently, the $9.00 monthly charge for access to its LSS was not reasonable under the statutory framework. The court's decision highlights the importance of ensuring that all steps in cost determination align with statutory requirements to maintain fairness and reasonableness in the telecommunications market.