What is MDF Jumpering?   MDF jumpering is required when a new ADSL/VDSL line has been tagged at the MDF in an apartment complex or office block by Telstra/NBN. Telstra/NBN owns the copper and fibre network and connects new ADSL/VDSL services from the ISP (Internet Service Provider) DSLAM in the Exchange to the customers MDF. … Continue reading What is MDF Jumpering?