The Australian Competition and Consumer Commission has signed off on Telstra’s revised migration plan, clearing another hurdle for the rollout of the 'multi-technology mix’ National Broadband Network.

The plan governs the progressive transfer of voice and Internet services from Telstra’s copper and HFC networks to the NBN.

The need to revise the migration plan has its roots in the decision by the Coalition government to switch from a pure-play fibre-to-the-premises (FTTP) NBN to one that will make use of Telstra’s existing HFC infrastructure (as well as the Optus HFC network) and employ the telco’s copper to deliver fibre-to-the-node (FTTN) services.

“The revised Migration Plan will better protect consumers from premature disconnection of their phone and internet services,” the ACCC’s chairperson, Rod Sims, said in a statement.

“However, consumers should act early when it is time for their region to migrate as connecting to the NBN is not automatic.

“If you want to keep your landline phone and internet services, you should place an order for an NBN service by the disconnection date for your region as your current services will eventually be permanently disconnected.”

ACCC sign-off has meant that the revised Definitive Agreements between NBN and Telstra have come into effect.

“The required conditions precedent for the revised Definitive Agreements have been satisfied, including approval by the [ACCC] of our varied Migration Plan and an acceptable ruling from the Australian Taxation Office,” Telstra’s CEO, Andrew Penn, said.

The revised agreements were signed in December. The value of the $11 billion deal remained the same, but the terms changed to take account of the ‘multi-technology’ plan.

NBN will now take progressive ownership of the copper and HFC assets it requires to deliver the ‘MTM’ network.